Cant Rev Over 3K Rpm

[bigpapi79]

Hello all,

New to this forum and I have searched and found similar problems but the fixes didnt seem to work. 1990 R32, set of cams and exhaust and splitfires. The car ran fine and now all of a sudden it wont rev past 3k rpms, spits out black smoke and runs pig rich. We have switched out the maf's with known working ones and the same problems persisted. Switched out the split fires and plugs with known working ones and new plugs but still got the same problems. Cleaned out the cat, found a chunk of wood in there (dont ask I have no idea) and the car still has the same problems. I dont have allot of experience with rb problems so i thought i would chime in to the experts to see if maybe im over looking some things or if there is a different area i should be interested. If any more info is needed just let me know. Thanks in advance.

[markdem]

possible cam belt slippage?

[bigpapi79]

possible cam belt slippage?

didnt see any of that either. when i say she runs rich, there is pig rich and then there is what she is doing. smells like you just dumped gas from the pump. smoke could be from kerosene soaked turbos but thats been a while back that should have stopped by now.

[Dre678]

Hello all,

New to this forum and I have searched and found similar problems but the fixes didnt seem to work. 1990 R32, set of cams and exhaust and splitfires. The car ran fine and now all of a sudden it wont rev past 3k rpms, spits out black smoke and runs pig rich. We have switched out the maf's with known working ones and the same problems persisted. Switched out the split fires and plugs with known working ones and new plugs but still got the same problems. Cleaned out the cat, found a chunk of wood in there (dont ask I have no idea) and the car still has the same problems. I dont have allot of experience with rb problems so i thought i would chime in to the experts to see if maybe im over looking some things or if there is a different area i should be interested. If any more info is needed just let me know. Thanks in advance.

I'm currently encountering a similar problem on my R33.

Check out this tut. I'll be trying it tomorrow.

http://www.skylinesaustralia.com/forums/topic/113284-fixing-your-rb26-afms/

Also worth rebooting the ECU after you're done.

[reeceo21]

ah fuel pressure regulator pooped itself ?

[bigpapi79]

I'm currently encountering a similar problem on my R33.

Check out this tut. I'll be trying it tomorrow.

http://www.skylinesa...your-rb26-afms/

Also worth rebooting the ECU after you're done.

We replace both of them with known working ones off of another 32 that was running 5min's prior to swapping them out.

[henry R]

I had similar problem in my 32 gtst, wouldn't rev over 3500rpm. Turns out my fuel tank had rust in it changed pump n tank to gtr one and fixed the problem. So check your fuel tank incase it has rust or gunk in it.

[bigpapi79]

we will check all that out, this car was previously tuned and put down 500whp roughly, all the bold on goodies and running a power fc, we took it all back to stock and the problems arose

[mr031]

check fuel pressure, than maybe scan your engine for any fault codes, ie afm or coolant temp if your in brisbane pm mate and i can help you out if you need.

[bigpapi79]

check fuel pressure, than maybe scan your engine for any fault codes, ie afm or coolant temp if your in brisbane pm mate and i can help you out if you need.

thanks for the info, i wish....currently we are in japan but up north