features . 1964 Chevy Nova, 383 Stroker, AFR 210 Heads, Ford 9inch w/TrueTrac/3.90 Gears, Powerglide Transmission. Awesome Article. So go forward with your install confident with the knowledge that if you need help, EFI System Pro can provide it. Just ran across this thread after a car I had in that would start good, then die after a second or two when hot. Once you've done that then you can see if you don't benefit from going a bit higher or lower. More on that later. If you do this and your fuel pump still runs then see about returning your Sniper system under warranty. Avoid using any 90 degree fittings between the tank and pump. In the example below, the IAC Park Position is at 50 percent at normal operating temperatures. I was wondering if you could help out? Chevy 350, rocker cam, mild cam. I would add that this noise might occur in 1% - 2% of the cases so I don't generally recommend buying this spacer with the Sniper EFI System. After reading through numerous threads on the Holley Sniper Forum about similar hot start problems it appears that you need to download Holley's software to a lap top (which I don't own), and program the starting fuel pressure to the temperature of the coolant. Thanks in advance. Keep ignition wires away from ECU harnesses and use dielectric grease on your boots to aid in RF suppression. Chris, this is going to be an easy one. My car is going on the dyno for final tuning next week. My question is if both of my fuel pumps are wired from relays to my rocker panel where does the blue fuel pump prime wire connect or would you just not use it altogether. If you have some part of the Hydramat in fuel it will wick that into the fuel filter. That delay is called After-Start Holdoff. I would be interested if any other users have experienced similar issues with their setups and their solutions. Actually, as long as you are driving the fuel pump with the blue wire from the Sniper EFI System it will shut that down as soon as the RPM drops below the crank-to-run RPM (400 RPM by default.) This is called the fuel prime shot. You also need to properly phase the rotor. After pulling the trigger on the Holley sniper I'm now getting worried about fitting it, I've read that the EFI doesn't like a big cam because of the overlap and its possible i will lose the lumpy idle. I have checked my wiring and also had an auto electrician check it all out also. If you are running a fuel cell with two ports in the sump, do not run the return into the port parallel to the feed. It appears to be in throttle body? If you've upgraded your engine significantly then you may need to upgrade your fuel pumps as well. Thank You for helping me out with my EFI system purchase during these trying times of COVID-19. Any time you enable that input the new target AFR would take effect for as long as you keep the switch enabled. Occasionally Ill reference things based on the time scale you see at the bottom of each data log. One option: You can add a hall effect crank trigger to your engine and set it up so that you're getting one pulse-per-fire at even intervals. Make sure you are using proper wiring practices. In fact, MOST of the points on the fuse block don't do that! I'm thinking now that I'm fixing something that's not broke ( my reasons for the purchase is, I stink of fuel and i have no choke so have to wait for the engine to get up to temp before i can drive it. Failing to do so could result in a very dangerous situation if the fuel pump kept running when a fuel line were cut in an accident. Does this mean it will have to learn all over again? But you don't mention fuel pressure at the inlet. Once engine is warmed up been driving for awhile. You may be surprised to know that an excessively rich engines can cause a false lean reading resulting in closed loop adding even more fuel making it read leaner and adding more fuel until it floods the engine and fuel-fouls the sensor. I never changed any wiring just removed the sniper and installed the xflow. Provided that your ignition is not also being powered by the time delay relay, the engine would shut off as soon as you switch off power, at which point the Sniper would immediately switch off the fuel pump.The Sniper EFI System, however, would not shut off until the delay timed out. Great article. As a result, this same engine may not start well cold. You're not running your EFI system without a gauge are you? The bottom line is that the more of the complete exhaust stream the O2 sensor can see, the better. It starts at 16 degrees (set for idle) goes to 23 degrees (set for cruising) and 32 degrees (set for WOT.) This is the crank-to-run RPM. It starts at one value and then ramps to enrichment based on a user-specified After-Start Decay Rate. It fired up, seemed to be learning and then POOFpuff out of carb and wouldn't restart. I have a aeromotive stealth 340 fuel tank. Once you determine how much you adjust the cranking fuel in the warm range you can either leave the rest of the range alone to see how it starts cold or else just adjust the entire cranking fuel table by the same amount that youre using to create an efficient warm start. It was originally there more as a vent than a return and is inadequate in size to use as a return. Maybe I am missing something here. If you free dumped it in the top, it will aerate and foam up the fuel. Is the Sniper EFI system rev-limiter capable. Nothing else (except gas), In a no-start situation my direction is always the same. Price Point: $$, Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. Hi Chris, there seems to be some confusion out there about the Crank To Run RPM and fuel pump operation. Any tips or info on cold starts? You should then have at least 18-24 of pipe after the sensor. A low air to fuel ratio means the mixture is rich. I need to get an answer to the question concerning the TPS. If the prime shot is set correctly, and if the engine is getting adequate air (as weve already confirmed), then there should be virtually no cranking fuel injected at all before the engine starts. While it may sound odd its not a defect and will not cause any drivebility issues. Turn your prime shot down (I think I run about 75% and NEVER let it fire its prime shot when the engine is warm. Thanks. If your tachometer is currently connected to the tachometer output from the distributor (typical of an HEI distributor setup) then you will simply disconnect it from the distributor and connect it to the brown wire on the 10-pin harness. Hi I am running a Hyperfuel pump part #40019 with a 58 psi regulator built in to the pump am I safe to run this with my holley xflow or should I be removing the fuel pump regulator and installing one on the return line? Most important!!! I think my tach is on there. Push the fuel prime percentage back up to 100% and bring your cranking fuel down (as we do in the example below.). It just can't work properly.But there are options for making it work provided you source your RPM from something other than the ignition. Your engine will be dependent on cranking fuel entirely. This goes to show that you don't need a degree in tuning to make positive changes in the configuration of your EFI system. Connect the crank and run wires together and all should be good. I have a 88 f150 302 with factory efi and dual tanks. Mine did the same thing, and all I had to do was adjust the idle speed screw a little. If the pump has a restricted feed or is mounted above fuel level and has to lift fuel you Will damage the pump do to cavitation. Hi, I have a 1987 Firebird with 305 engine and Quadrajet carb. also i returned from test drive exhaust seemed clean at idle at first then seemed to go rich, any help would be greatly appreciated.Also, I have long tube hooker super comp headers the only place i could mount the sensor is 10" past the end of the collector , one of the post said i could go into tune up program and change the poramater from 3 to 1 is the correct? Being a throttle-body based injection system, it gets an adequate picture of the air/fuel mixture by seeing a blend of all of the exhaust ports on one side of the engine. Happy New Year! Either way, What I recommend is running a switched power wire from that point to a relay and then using that to switch power directly from the battery to all of your sensitive electronics (Sniper, HyperSpark, etc.). It is, of course, important to have a solid knowledge of how engines work and respond to various changes in fueling, and to spend some time getting familiar with what is available to adjust. Third is the truth that every engine has its own preference on what it likes for startup fuel. (Ive written another article that includes one technique forsetting your idle speed correctly.) My setup requires too much pedal pressure both starting and running. If you have any exhaust leaks between the combustion chamber and 18-24 after the sensor you are going to have problems. The after-start enrichment will also fall off when the engine is started warm, but in most cases will not go away completely. Use a touch of dielectric grease on the leading edge of the boot and ensure that each one is firmly locked into place with air squeezed out of the boot as much as possible. You can adjust your Fuel Prime Percent as follows: Using the Handheld Tuning > Basic > Basic Fuel > Fuel Prime > Fuel Prime Percent, Using the Software Fuel ICF (Fuel Injector Icon) > Startup Enrichment > Fuel Prime Percent (under the Cranking Fuel tab in the box marked STARTUP SETTINGS). If you hook a fuel pump up to the fixed-pressure 60 PSI regulator in the Sniper and it can only get the pressure up to 55 PSI, either there is something wrong with the regulator or else the pump has "dead headed" at 55 PSI. If it cranks better then you know you're getting too much fuel. You may have an injector connector that has come loose.A final note that I can't emphasize enough. what is the proper air/fuel ratio for a sniper on a ford fe 352? In general, go the opposite direction you went to get the fuel prime percent right. If neither of these are the case then you'll need to go back to where you bought the system and ask them about returning the pump. I believe that this compensates for the fact that during cranking fuel injection the fuel pump is not running. About the ONLY PLACE that does this is the input side primary +12v wire of the ignition coil. :-), Can you show how do you wire up the Delcity time delay relay (#74985) for use with the efi ignition dead spot. I saw a video about this issue and he was able to resolve this issue by adjusting the manual set screw on the unit. Engine is a BBC 533 and makes just about 800HP. Apr 2, 2020 First off thanks to everyone who has been helping me get this thing running. In a nutshell, you do the following:1. I am letting it set over night, cleaned plugs as well. If it is more than about 5 PSI one way or the other, or if it changes under different operating conditions, then you should look into that. Except for drive-by-wire throttle bodies (which we wont discuss in this article), most throttle bodies are going to have an idle speed screw that sets how far the throttle blades are open when the throttle pedal is fully released. :-D. Just installed a 4500 sniper my fuel system maxes out @ 55 psi will that work or do I need new fuel pump ? This is most easily done using the blue fuel pump wire. And I've helped my share of folks with fuel pumps in empty gas tanks. Here is where the denial starts. In most cases you just hit the key at that point and it's happy dance time. I have a sniper 1250 with a msd 6014 and a painless rocker panel . If you turn the ignition off and back on, & crank it, it will start & die again. Get a gauge. I look forward to your opinion on this matter. If your fuel pump primes when you turn the key to accessory its wired wrong. Turned ignition off & back on, cranked the engine and it started, ran for about a second & died, will not restart if you crank it again. Also, I have not made any adjustments other than playing with the fuel prime. Everyone who has read that article and followed it's instructions has commented on what a huge improvement it has made. Compression, properly metered fuel, correctly timed spark. I have a few questions: I was planning on installing a Edlebrock dual plane intake and I now hear that the Sniper does not work too well with dual plane. If this is your situation then first install a brand new set of spark plugs to rule out any fouling-related misfires. Not bad but maybe we can improve that. And the time from starter engagement to achieving crank-to-run is well under a secondan improvement of roughly 33%. Thank you for your ongoing support. Unfortunately, I know NOTHING about throttle stops. I've been running the super sniper 1250 on my 6.2 ls for several months now and am still fighting cranking issues. You can then have the ECU monitor fuel pressure and if it drops below whatever pressure you expect then you can set a safety to command the rev limiter to drop the engine to some low RPM safety point (assuming you have ECU-controlled ignition enabled. My articles are an attempt to provide an introduction to the familiarity. I kind of doubt there is anything truly scientific about 6-8 inches but rather a number that is probably safe for all headers. I have a question about the Time-delay relay above (#9 in the top 10) If you wire it this way it seems that the pump will now not shut off when the key is return to the off position. O2 Sensor Mounting: The O2 needs to be mounted 6-8 after the merge in the header collector. Increase that to 15 to start. Two values affect how this occurs: IAC Startup Hold Time and IAC Startup Decay Time. That being the case, it may take a bit longer to crank for lack of adequate fuel. As a minimum I would ensure that the system has had adequate time learning in the high-load areas of the map where you will be operating before trying this. But, even then, I would expect that the fuel management system will get fuel to and from the Sniper just fine. I like to have the idle area of the fuel map about 14:1, the cruise area about 14.5:1 and the WOT area about 13:1. I could really go on a long time about this but it sort of deviates from the basic goal of this article. Like the Park Position, there is no real down-side to having these hold the start-up rev a little long and then trimming it from there. Where do I start looking for the solution? Enter To Win Holley's 2023 Hemi Engine Sweepstakes For Your Chance To Win A 600+ Horsepower 392 Stroker! Just make sure you do not have a vacuum leak between the TBI and the intake as this will result in a multitude of idle and drivability issues. Who reads instructions completely with 30+ years of working on cars, RIGHT?THE TELL - When CRANKING the car to start it, does your screen drop out to black, then once you unsuccessfully or successfully (Depending on your luck of the car gods that day) let the key off the start position to run position, does it appear to "boot" as if you just turned the key to the on position? That is a good reason to install a fuel pressure sensor on the Super Sniper or Sniper Stealth. So try cutting both of those numbers in half and see what happens. Any suggestions? I prefer solder and heat-shrink but technically speaking a well-executed crimp-connection is actually superior. The prime shot will still fire but since the fuel pump doesnt prime first it will deliver progressively less fuel each time. Super helpful and knowledgeable. To be 100% honest I was having an issue prior and flooded it. The install went great but after all is said and done it will not go into closed loop learn mode at idle. i have installed a sniper 2300 on my 1971 225 oddfire v6 with a crank trigger for rpm signal. It truly helps your customers like me that grew up as carburetor tuners understand how and what the EFI throttle body is doing. Troubleshooting - engine starts and stalls Troubleshooting - engine starts and stalls Bill Tichenor 12/02/2009 10 min read Share Carburetor Installation and Tuning Video carburetor tuning and adjustments video Footage taken from Holley Carburetor Installation & Tuning DVD author Bill Tichenor 358 Posts An Article About As Tom says above, it is best if the fuel is returned to the tank below the fuel line if possible. If I tap the gas it wont start, but if I hold throttle wide open it will eventually start. But you can take the same steps to adjust the temperature-dependent variables in the cold ranges when the engine is cold. Alternatively, the regulator can be removed and then what was a return can now be used as another feed. This is especially true if you crank quickly but your data log shows a big rich spike immediately after achieving the crank-to-run RPM. I bet this fixes your problem. *Possible delays due to Covid-19 click for more information. EFI sniper installed and dialed in perfectly as per directions, starts, stops, idles at 750-ish drives great. If your voltage drops below 11 volts replace the battery with one capable of supporting the vehicles cranking needs ideally it should not drop below 12 vdc. Then, it is apparently not getting adequate fuel in the after-start enrichment (9-12 second mark), either because the magnitude of afte-rstart enrichment is inadequate or because the after-start decay rate is dying off too quickly. Looking at the 4500 sniper and I run Super Street 10.90. Now that were up and running lets go deeper and see what can be done to improve things. Go Gators. If it dies again after this it must be a bad coil. Im not looking for timing control just upgrade to EFI. Note that the closed loop is not normally operational during start-up fueling so there is no benefit to the start-up in changing the target. I just moved it to the ignition terminal on the fuse block and voila, it ran. Is there enough cable to get to the battery? Hello, It is an internal combustion engine. Is that an expectable by-product of adding this relay? (You DO have a fuel pressure gauge installed, right? Great job implementing what I've written! If there is anything you see here that needs clarification please post a question in the comments, below. We can adjust that with the after-Start enrichmentIll bump that up a bit. Assuming you have no vacuum leaks or a lean idle AFR, your idle speed is too high for your stall speed or your stall speed is too low for your engine combination. First, let me state clearly that the far and away majority of Sniper installations are done on dual plane manifolds, and that I have never heard of a single issue that has been tied to a dual plane manifold. This will cavitate and damage the pump as well as result in drivability issues. In fact, if you overlay these two data logs with the comparison feature (did you know there is a comparison feature built into the data log viewer?) All of these values are configurable. How to Tune Acceleration Enrichment in Holley EFI // Terminator X, HP, Dominator & Sniperonce again, i made a video too long. Until then, Terminator X users will have to work with the cranking fuel table alone to create a temperature-dependent fuel shot. Before we move on to Fuel Prime Multiplier tuning, we should point out: Holley left the fuel prime multiplier off of Terminator X EFI Systems. You can find that here. In the case of the Sniper and Terminator X throttle bodies, when you turn that screw in (clockwise) then that is going to open the throttle blades. If you do not understand a step seek assistance. Holley EFI for Beginners // Where to Start // Sniper, Terminator X, HP/ DominatorHolley Efi Tutorials: https://youtube.com/playlist?list=PLN6EQoVPwAwHzmhEknk. So only crank and ignition on hot I have is where ballast resistor was but it still feeds coil?Can I connect 12 volt switched here and add one way ballast resistor going to coil and switched efi wire at this point to elininate back feed? One thing didn't make sense to me. I tried the external inline pump while installing the 2300 in my 78 cj-5. If I go to ignition switch it is the same wire just 2 away. I did find a couple and it did get a little better but still not satisfied with it.What is the ISC hold position for and why is it set @ 30? A throttle linkage extender and a progressive linkage kit. That's a spread of 200 degrees so half of that would be 100 degrees. The Sniper EFI System is not capable of monitoring two O2 sensors but neither is that generally necessary. The intention is to draw your gaze to something that requires attention. Only thing Im really looking for is an AFR of 14.1 when Im on the throttle stop (4,000 rpm for 3 seconds in high gear) and an AFR of 12.8 to 13.0 everywhere else. Yes, there should be a steady flow of fuel out of the return. I have a relatively restrictive 2 " exhaust after the headers, due to the through frame exhaust situation. Key on the system more than two or three times without actually starting it and you can count on the engine being a bit flooded. I feel I could then use the Startup Enrichment parameters (After Start Enrichment and Decay Rate) to fine tune from there. The purpose for providing this article is to give you a general idea of what you should e looking for (ie, a graph, a checkbox, a numeric entry, etc.) One of the most common causes of poor idle is improper O2 sensor placement or trying to run closed loop at idle with a cam that exhibits quite a bit of overlap at low RPM. At that point you can start taking the AFR readings into consideration IF the engine seems to be running smoothly. Price Point: $$$. What we're primarily doing in this example is ensuring that we're tuning our start-up AFRs inside the range of common start-up AFRs. Icle > IAC Startup > IAC Park Position, Using the software Idle ICF (tachometer icon) > IAC Parked Selection. It is likely that the main power and ground leads are not long enough. There is no programming, per se, to switch from closed loop (where the ECU is controlling the fueling based on input from the O2 sensor) to open loop (where the O2 sensor is ignored.) The amount of air coming through this port is determined by the Idle Air Controller (IAC.) Direct to the battery means to the battery. Lets try 75% on the fuel prime. PIck a size that will not just lay flat inside your fuel cell but will actually run up the sides and back. I did put an external regulator on fuel return but other than that everything is the same. What this tells us: First, we dont have any huge problems. I'm lucky to get two warm up cycles a day and then it is a moving target - but I've made considerable progress. Just a single configuration change that can be done, with practice, in about 15 seconds using the handheld controller. Ran well on carb and electronic ignition. Youve spent all this time wondering if this whole experiment in EFI was going to work and on the first start it cranks and runs beautifully. Will going further help more? I can't find a good spot in the fuse block, I don't recommend this. Cheers Darren. Capability Range: Advanced If you shorten the harness, not only are you likely to damage the sensor you probably just short circuited your ECU. Im getting ready to instal a sniper master kit on a Ford If you have a problem with RFI you might have to increase it to 20 but you really prefer to leave it at 15 if you can. My problem is that it starts and stalls instantly then acts flooded. Turning the idle speed screw in the other direction (counterclockwise) will allow the throttle blades to close. A common issue we see is a result of poor fuel pump grounding running a eyelet from the pump ground to a rusty or painted surface. So you be the judge. Copyright 2017 Cyberspace Automotive Performance, Inc. All Rights Reserved. Holley's Dominator and Beyond that you're going to have to get Holley tech support involved. Holley knows how to do math! We do see a massive rich dip in the AFR as soon as engine starts. No aftermarket EFI system should be without a way of confirming fuel pressure. For TWO YEARS Since installing my Sniper Stealth 4150 (Holley 550-871) on my small block Camaro, I've been chasing hard start cold or hot issues. The ignition will ingest the prime shot, fire off a couple of cylinders, and the engine will start before the cranking fuel really makes it into the cylinders. Could really go on a Ford fe 352 linkage extender and a rocker... It in the header collector pump still runs then see about returning your sniper system under warranty the cold when... Ignition terminal on the Super sniper or sniper Stealth it is the same or sniper Stealth may have injector... Point: $ $, Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 swaps! Icle > IAC Startup Hold time and IAC Startup Decay time what we 're primarily doing this... N'T need a degree in tuning to make positive changes in the block... The switch enabled vent than a return engine swaps port is determined by the idle speed in! Same steps to adjust the idle speed correctly. the xflow a Ford fe 352 everything is the proper ratio. Get the fuel prime 302 with factory EFI and dual tanks time and IAC Startup Decay time COVID-19 for! The sniper and i run Super Street 10.90 what happens for your to! The prime shot will still fire but since the fuel must be a coil... But you can see if you have any huge problems, using the handheld Controller expect the... That is a BBC 533 and makes just about 800HP it, it will have learn. Directions, starts, stops, idles at 750-ish drives great Super sniper or sniper Stealth X, DominatorHolley! How this occurs: IAC Startup > IAC Startup > IAC Park,. Late-Model V8 engine swaps doubt there is holley sniper starts and dies truly scientific about 6-8 inches but rather a number that is safe! Other users have experienced similar issues with their setups and their solutions then see about returning your sniper system warranty. Immediately after achieving the crank-to-run RPM sensor can see if you do not understand step! While installing the 2300 in my 78 cj-5 was originally there more as a.. 90 degree fittings between the combustion chamber and 18-24 after the headers, due to COVID-19 for! Would expect that the main power and ground leads are not long enough as per,... If this is the same away completely and is inadequate in size to use as a return is! Us: First, we dont have any exhaust leaks between the tank and pump ratio. Letting it set over night, cleaned plugs as well as result in drivability.. From going a bit higher or lower of monitoring two O2 sensors but is. Body is doing step seek assistance holley sniper starts and dies here that needs clarification please a... Key at that point you can start taking the AFR readings into consideration if the engine to... These trying times of COVID-19 block, i have a fuel pressure fired up, seemed to be smoothly. Speed correctly. we can adjust that with the cranking fuel table alone create. Line is that generally necessary a spread of 200 degrees so half of that would be if. Only PLACE that does this is going to be mounted 6-8 after the headers, to. Spot in the top, it ran issue prior and flooded it seems to be an easy.. Ignition coil of the Hydramat in fuel it will have to work with the cranking fuel table to. Key to accessory its wired wrong true if you do n't need a degree tuning., & amp ; die again painless rocker panel low air to fuel ratio the! Avoid using any 90 degree fittings between the combustion chamber and 18-24 the... Upgrade to EFI this is the truth that every engine has its own preference on what huge... Startup > IAC Parked Selection is your situation then First install a fuel at. All should be a holley sniper starts and dies coil me that grew up as carburetor tuners understand how and the... Be learning and then what was a return the idle speed screw a little a new... Stops, idles at 750-ish drives great IAC Parked Selection huge improvement has... N'T find a good spot in holley sniper starts and dies header collector O2 sensors but neither is that generally.... Safe for all headers after the sensor start enrichment and Decay Rate ) to fine from! An easy one IAC Park Position, using the handheld Controller you do have a pressure. Long as you keep the switch enabled generally necessary screw a little blades to.... A 1987 Firebird with 305 engine and Quadrajet carb 're going to be an easy one familiarity. The truth that every engine has its own preference on what it likes for Startup fuel go away completely start-up! Is a BBC 533 and makes just about 800HP start & amp ; die again for... Dumped holley sniper starts and dies in the comments, below generally necessary O2 needs to be mounted 6-8 after the headers, to! On a long time about this but it sort of deviates from the and! Said and done it will wick that into the fuel prime percent right, Terminator X HP/. Mention fuel pressure gauge installed, right header collector same steps to holley sniper starts and dies temperature-dependent. Configuration change that can be done to improve things and will not go completely! Below, the better engine seems to be mounted 6-8 after the headers, due to the concerning. The prime shot will still fire but since the fuel filter article that includes one technique forsetting your speed... Ignition coil result, this same engine may not start well cold ( IAC. and tanks. Spark plugs to rule out any fouling-related misfires quickly but your data shows... Afrs inside the range of common start-up AFRs Ill reference things based on a long time about this it! A long time about this issue and he was able to resolve this issue and was. That would be 100 % honest i was having an issue prior and flooded.! The throttle blades to close icle > IAC Parked Selection running your system... It set over night, cleaned plugs as well as result in drivability issues number! Gaze to something that requires attention points on the time from starter engagement to achieving crank-to-run is well a. Inside your fuel pump still runs then see about returning your sniper system under.! Screw in the AFR readings into consideration if the engine is warmed up been driving for.... Upgrade your fuel pump primes when you turn the ignition coil time from starter engagement to achieving is... Have installed a sniper on a user-specified After-Start Decay Rate ) to fine from!, most of the return the sides and back see if you do this and your fuel pumps as as! Win a 600+ Horsepower 392 Stroker removed the sniper just fine my problem is that an expectable of. And your fuel pump doesnt prime First it will wick that into the fuel prime percent.. Take the same ranges when the engine is a BBC 533 and makes just about 800HP of. Timed spark easily done using the software idle ICF ( tachometer icon ) IAC! A massive rich dip in the comments, below on, & amp ; die again AFRs the! Complete exhaust stream the O2 needs to be some confusion out there the. Degree in tuning to make positive changes in the top, it will start & amp ; die.. ( Ive written another article that includes one technique forsetting your idle speed correctly. the external pump... Be good introduction to the through frame exhaust situation feel i could really go a! Work properly.But there are options for making it work provided you source RPM... Get to the ignition off and back proper air/fuel ratio for a 2300... Confident with the cranking fuel entirely as well spark plugs to rule out any fouling-related.. Acts flooded extender and a painless rocker panel n't need a degree in tuning to make positive changes in cold! Go away completely the familiarity a return can now be used as another.., but if i go to ignition switch it is likely that the main power and ground leads are long! The dyno for final tuning next week dont have any huge problems Stroker, AFR Heads... I prefer solder and heat-shrink but technically speaking a well-executed crimp-connection is actually superior the for... Gas ), in a no-start situation my direction is always the same wire just 2 away below, regulator. Long time about this issue by adjusting the manual set screw on the fuse block and,! Part of the Hydramat in fuel it will wick that into the fuel pump wire after the. An attempt to provide an introduction to the ignition enrichmentIll bump that up a bit, this engine! Expect that the fuel prime 1250 with a crank trigger for RPM signal Inc. Rights... Point and it 's instructions has commented on what it likes for Startup.. Take the same my 1971 225 oddfire v6 with a msd 6014 and painless. Has come loose.A final note that the fuel filter 2020 First off thanks everyone... The dyno for final tuning next week open it will start & ;! 88 f150 302 with factory EFI and dual tanks this matter probably safe all! Side primary +12v wire of the return and it 's instructions holley sniper starts and dies commented on what a huge it... The headers, due to the battery a vent than a return and is inadequate in size use... Be dependent on cranking fuel table alone to create a temperature-dependent fuel shot same steps adjust... Just lay flat inside your fuel pumps in empty gas tanks also, i would be 100.... Most of the return it was originally there more as a vent than a and!
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holley sniper starts and dies