HOLLEY SNIPER EFI: High Fuel Pressure Solution
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- Опубліковано 14 лис 2019
- Erik has narrowed down the issues to the fuel system, and replaced the fuel pressure regulator TWICE!! Hopefully the issues are resolved...
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*Disclaimer - This video is intended for entertainment only. GODSPEED Garage, LLC, or anyone involved in making this video is not responsible for any damage to person or property that may occur attempting this on your own. You assume all responsibility for your own safety as well as use of your property. - Авто та транспорт
Dude I was dying at the “We’re having fun” while looking at the mess you’re about to get into. Been there. I felt that look.
in the video it was a few seconds... it was actually a couple weeks worth of work. that was the look of dread knowing how much work I had ahead of me... good times ;-) thanks for watching!
@@GODSPEEDGarage I had just told my wife, I don't think I miss all the trouble shooting. (I haven't worked on a project in 5 years but am getting into one now) and then you said that... "good times...having fun" and I laughed out loud. Thanks!
love your channel bro... keep up the good work!
Dude. Thanks for the help. I’m currently adding a sniper to my 67 nova. This series of videos have been super helpful.
Great info!! Ty
Great video. Yes thats a learning experience. I definitely want to get the Holley sniper. I've tried Fitech, and it seems good as well.
Nice video, this is why i use an external aeromotive adjustable regulator and a American fuel pressure guage. It takes a lot of the guess work out
yep. I've gone to an external Holley Regulator. seems to be working. that little diaphragm regulator is a joke...
Well done!!!
Great job on the vid. 👍 I have seen a few other Holley Sniper videos with the same symptom (backfiring, pressure too high). Seems like a weak point in their design. Sounds like they are aware of that.
great point! Holley is a great company... that diaphragm fuel regulator seems jankey. I ended up biting the bullet and going with an external pressure regulator - Holley 12-882. THANKS FOR WATCHING!!
Man.. thanks for sharing that video.. best part is when you started enjoying drinking coffee.. just installed the EFI and i'm running into an issue after the other one.. I feel like I can't even drive around the block for once. my point is, it seems like I am not the only one who feels like as soon as you got something done, something else is not adding up ans it needs to get done..
The baseline was 1.20 msec, and once I narrowed down through trial & error, that 1.70 msec was too high (coast AFR went to 12), and 1.60 msec was too low (coast AFR went to 20). I settled on 1.64 msec. I was surprised at how much of an impact just .01 msec would have.
Adjust the fuel injector how long it stays open
Don't you love hot-roding....good times. LOL....man I can relate! Made my day with that....
I knew that you would get it running right it's just ashame all that work and it was a bad part on them keep it up
thanks brother!!
I know your pain man im there right now and i feel the same way hotrodding.
Hell yeah bro I'm in a chair too motivation bro💯
Dude I’m a about to put duel sniper efi on my supercharged Buick this kinda scars me a bit but good info thanks
Awesome video thanks for sharing bud, but now I wanna know what happened to the motor man I kinda excited to see what happened to it
thanks... cam was completely worn. I stripped it down, planned on rebuilding it, took it to the machine shop and they found a crack... so now I have plans to turn it into a badass propane fire pit! maybe I'll shoot a video on that and post it here... thanks for watching!
Holleys customer service is great on there EFI stuff usually no problem with them shipping stuff out very quickly when a defective part is involved.
Totally agree!
Coffee and hot rods 👍🏽
My sniper just did the same thing this weekend. I’m taking the regulator completely out and installing an in-line regulator
that's what I ultimately ended up doing too... it's held up well since then.
Finicky fuel regulators who would a thunk👍🤸♂️
Good video. I been really interested in the sniper efi would you recommend it or a different unit
thanks for watching! honestly it's been pretty frustrating. Holley customer service is great, and there are tons of forums to get help and info. but I've finagled this thing over and over. every time I feel like I get it dialed, something else starts happening. I will say, though - living in the Pacific Northwest, with hot summers and snowy winters, it does fire up every time. nice not to have to mess with adjusting a carburetor for winter, then again for summer... kinda the reason why I went efi to begin with. I don't have experience with other brands of efi. I do know a guy who used the FAST one, and he seemed to like it a lot...
I have heard of a few having issues with built in regulator . i run the 1200-2 holley pump at 80 psi . and no issue .
Is yours the 12-1800
Their customer service is great if you could get them to answer the phone
Have 351w stroker 410 and the sniper ran good at first……then richened up and fouled the plugs, oil was black after 100 miles too, started smoking on deceleration, smelled strong like fuel. We’re trying the O2 sensor and then high fuel pressure. It’s a mystery. It’s why people do newer crate swaps or go back to carbs. These efi systems for the four barrel intakes have a long way to go to be consumer friendly.
100% agree... in fact I'm in the middle of editing a video showing all of that... it will be posted in a couple weeks. thanks for watching and thanks for your comment!
You need to adjust the fuel injector how long it stays open.The baseline was 1.20 msec, and once I narrowed down through trial & error, that 1.70 msec was too high (coast AFR went to 12), and 1.60 msec was too low (coast AFR went to 20). I settled on 1.64 msec. I was surprised at how much of an impact just .01 msec would have.
that's awesome thanks for the input! I'll have to try it...
Hi bro am from Kenya I have a client with the same system problem every day
If the pressure gauge is on the inlet side without a regulator before it’s gonna read high correct
The FPR in the sniper is garbage, I had to replace mine cause it was running at 100psi. Put the new one in and within the first 40 miles it was running at 100psi again. So I bought an aeromotive
what did you ever find out . this is happening to me . I had 80 psi going in so I put a psi regulator with a return line on it and turned it down to 58 1/2 psi and that helped but did not solve the back firing . I would like to find out why it running so crappy. Please tell me if you solved the problem
well... that internal diaphragm type pressure regulator seems pretty jankey, so I ended up installing an external fuel pressure regulator - Holley 12-882 - and now it seems to be functioning... buuuut... after pulling the engine the cam was completely shot... so that was definitely the issue with the backfiring. it was a stock cam with stock flat tappet lifters... anyway, I hope that helps. thanks for watching!!!
@@GODSPEEDGarage I used a external psi regulator also to fix problem
That built in regulator seems cheapy. Can you add a quality regulator before the built in one to garantee correct psi?
you can!! i almost went that route... and still might... holley makes one, but really any regulator will work so long as its 58-60 psi. it was just a money thing for me, and since Holley sent me a replacement for free i just went with it. THANKS FOR WATCHING!
58-60 tops for fuel pressure.
just curious, but what size fuel pump do you have?
its the fuel pump that came with the Master Kit - Holley 12-920 Fuel Pump - 80gph, 60 psi
@@GODSPEEDGarage dang.. so that little dimple does affect it that much.. crazy.
Wonder if the knocking is a too advanced of a timing?
it was a whole mess of issues... I ended up pulling the engine out, pulling it apart - and a whole can of worms fell out... cam was bad, valves are shot, block is cracked... I thought it was a good engine. oh well... gives me an excuse to build my 383 stroker! stay tuned! THANKS FOR WATCHING!
Only time i see a motor backfire like that the cam was flat. Pull a valve cover and watch rockers while running.
thanks for the input... I didn't mention it in the video but I was actually thinking the same thing... after pulling it apart, it turns out the cam was trash. it was a stock flat tappet factory piece of junk. I ended up installing an external fuel regulator - Holley 12-882 and it seems to be working fine now... THANKS FOR WATCHING!!
I am having the same problem in my 57 step side . i am starting to think holley snipers are a peas of junk and take it to holley and feed it to them
Watch the fkn video man. he explains why it was acting like it was, dont just throw the product under the bus
Did it finally get fixed?
weeellllll.... I ended up going with an external regulator. then I pulled the engine, took it apart... found lots of issues, flat cam, worn lifters, worn cylinder walls... took it to the machine shop, they found a crack in the oil valley. so now it's sitting in my shop waiting to be turned into a fire pit. I have a 383 for my truck I'm waiting to build. so, "fixed" it by throwing the old motor back in there. I'm actually working on a follow up video where I chase down all the possible issues... stay tuned for that
Same issues I’m having with my sniper🧐🤔
KILLSWITCH831 hey did you figure out what was wrong?
Khris's Garage no i didn’t got tired of messing with it went back to carb 😂 it’s up for grabs
KILLSWITCH831 Damn, I’m going to try external fuel regulator tomorrow and if that doesn’t work I don’t know what else to do, this EFI is brand new I can’t even drive the car because of this problem.
Khris's Garage Yelp me about it didn’t even put 200 mile on it still brand new 🤦🏻♂️🤷🏻♂️ good luck 🍀
Do you still have the sniper up for grabs?
If your running a flat tapper cam it could be possibly a cam lobe wore off
YES!! after pulling the engine the cam was completely shot... so that was definitely the issue with the backfiring. I ended up installing an external fuel pressure regulator - Holley 12-882 - and now it seems to be functioning... thanks for the input and THANKS FOR WATCHING!!
Honestly that doesn't sound like a fuel issue at all. You need to check timing
you are correct. ended up pulling the engine apart. bad cam. long story short... the block was also bad, so I turned it into a backyard fire pit that shoots flames... good times
Wanta guess why I'm looking at this video?
lemme guess... high pressure problems? I ended up going with Holley's inline regulator and ditched that crap that went on the unit itself. here's the one I got: www.summitracing.com/parts/hly-12-882?seid=srese1&gclid=Cj0KCQjwna2FBhDPARIsACAEc_WTUxjxJEuwJmmqd59ngdVOtYgJlvdNBvHhozIm4qzCQzZqzuScYVYaAqfkEALw_wcB. hope that helps! thanks for watching!