Don't say that man, you're just getting a hard time from it. I'm thinking it's an ignition timing problem. When I swapped my motor, I timed the ignition "by ear", and it was way retarded. When I hit the gas, it would pull normally, until 2500 or so RPM (no tach so I don't know exactly). It would then just fall on its face. It would bog until i placed it in the next gear, then pull fine. Do you have an aftermarket ignition? Is it retarding timing under boost? :thinking: Just thought I'd throw that out there... You never know. Cheer up man! At some point we all want to push our cars off a cliff, you'll figure it out.

 

Ok....have you checked the simple yet overlooked? For example: The FUEL FILTER? Common problem to have filter that may be clogged or dirty and when a small amount of fuel is running throught it the car handle it just fine...when you step on your gas increasing the amount of fuel going through it, the filter is so clogged it just CHOKES up.

What about a valve adjustment? Have checked the gap and valve adjustments? I dont think your problem is your fuel managment system. It sounds like your car is getting too much fuel vs too little.

GOOD LUCK!

 

I'm having the same problem on my D-series and I think it's ignition related.

Check the gaps on your plugs. Mine were out .010" and a little crispy. I've got 20k miles on them so they should be a little worn by now... but .010" was a lot.

Check the condition of the contacts and rotor in your distributor. Lightly clean those up with sandpaper if they look crusty. If there's an orange dust inside your distributor cap, your plug gap is too wide.

Check your base timing and make sure it's correct.

 

OK.. i'm still having the problem

Heres what i've done tonight.

1. Replaced Fuel Pump (Walbro 255lpr)
2. Replaced Fuel Filter
3. Replaced Injectors
4. Replaced Spark Plugs

I'm getting fuel, i'm getting spark..

I checked my timing & it's perfect....

i just wanna drive my car again

 

Mine does that intermittantly. If I turn the car off and then back on, it works fine :dunno:

Good luck Tony, other than what you have already tried I dont know what to tell you.

 

Still struggling.. what to try next

what the hell else could cause this!

 

Well i guess i'll try throwin my D-series ECU on it & see if it's an ECU problem or not.. then i'll probably barrow a friends Distributor & swap that out..

i hate this crap!

 

Sorry man, my experience was with a NA motor. From a boosted perspective, how is your fuel pressure regulator???

Your FPR is supposed to be...
(your engine's baseline fuel pressure at warm idle)PSI + n
n = 1 extra PSI of fuel pressure for every 1 PSI of boost pressure.

So... if your baseline pressure is... say... 43 PSI, and at full boost you're running 14 PSI, then your fuel pressure must reach 43+14=57 PSI. As it spools at part throttle, you may build 5 PSI. Your fuel pressure should be 43+5=48 PSI under this condition. Comprende?

If that doesn't happen all the way to red-line, there's your problem. At part throttle, you're not going to build full boost. It may have enough fuel pressure to accelerate properly, but WOT might not if your FPR took a dump.

If you're running lean, DON'T go mashing on it or driving it around. If your fuel can't keep up at WOT, your engine die quickly. Fortunately, you've put forged everything in there, right? :dunno: Thought so?... ? I read that 2000 brain cells ago didn't I? If so, you're fine, but get it fixed asafp. See if you can get a fuel pressure gauge from www.harborfreight.com, or rent one from a local auto parts store. Install it, get someone else to drive your car, and ride w/them & watch it. Or just buy a fuel pressure gauge if you don't have one already and you don't mind spending money on another part. It's a good indicator when you're having problems.

 

It's not a fuel issue jafro.. i can't go above 3000 rpms.. car just bogs out like a rev limiter would.

I'm thinkin that i'm in limp mode but have no idea why!

Things that are NOT my problem:
I've tried this so far!

-Fuel Pump (repaced with walbro 255lph)
-Fuel Filter (new)
-Injectors (replaced)
-Timing (it's perfect)
-Power (plenty of voltage)
-Distributor (tested with another one, problem continues)
-ECU (tested with another one, problem continues)

 

i would say that it was a maf, but hondas have maps, so i would check that, whats a a/f look like

just a guess