Need Help. Running rich - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

lazyboyz4 · 07-20-2008, 04:16 PM

Ok so the other day i swapped a new turbo manifold on my SR20det Redtop because the turbo cam loose off the stock one. No big deal, ran great and was super fun. I then went for a nice spirited drive and the gasket between the turbo and manifold blew out. Parked the car till i could get a new one.

Last night i got everything fixed and went to drive it and it runs super rich and doesnt want to accelerate. I thought it was a boost leak so i checked that and everything is fine except i am noticing that there is boost leaking from my valve cover, where the T is at. I check the pcv valve and it works just fine.

My guesses are that either i have some fried rings, or i have bad valve seals. Any help would be great.

Backround Info:

Last compression test was at 125-130 psi all around, before this happened.

Greddy intake manifold, FMIC, XS power turbo manifold, T25 turbo, Full 3" all the way out, test pipe, 13-14 psi.

lazyboyz4 · 07-21-2008, 05:05 PM

New compression test results:

1: 136psi
2: 134psi
3: 135psi
4: 136 psi

all done with throttle closed and fuel. I replaced the spark plugs and it runs somewhat better but still super rich. It will spit and backfire alot. I unplugged the o2 sensor and it runs alittle bit better in open loup. I cant figure out the problem. any help would be great.

drftthatshit · 07-27-2008, 04:15 PM

sr 20's are super sensitive to change i have noticed they like what they came with on them not sayin doin mods are bad but they need to be tuned for every little thing you do if you changed out the tubo manifold to a diffrent one your car may need a tune

ArmadaJspec · 08-26-2008, 07:27 AM

I agree with drftthatshit . At least get APEX'i AFC NEO or Power FC L-jetro. Its a win win situation. You will never loose on either one of these products. Along with a Nismo FPR. You will notice a big difference when its tuned right by a Certified APEX'i tuner.

07-20-2008, 04:16 PM	#1
lazyboyz4 Join Date: Jan 2008 Location: Everett, WA Posts: 2 Trader Rating: (0) Feedback Score: 0 reviews	Need Help. Running rich Ok so the other day i swapped a new turbo manifold on my SR20det Redtop because the turbo cam loose off the stock one. No big deal, ran great and was super fun. I then went for a nice spirited drive and the gasket between the turbo and manifold blew out. Parked the car till i could get a new one. Last night i got everything fixed and went to drive it and it runs super rich and doesnt want to accelerate. I thought it was a boost leak so i checked that and everything is fine except i am noticing that there is boost leaking from my valve cover, where the T is at. I check the pcv valve and it works just fine. My guesses are that either i have some fried rings, or i have bad valve seals. Any help would be great. Backround Info: Last compression test was at 125-130 psi all around, before this happened. Greddy intake manifold, FMIC, XS power turbo manifold, T25 turbo, Full 3" all the way out, test pipe, 13-14 psi.

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07-21-2008, 05:05 PM	#2
lazyboyz4 Join Date: Jan 2008 Location: Everett, WA Posts: 2 Trader Rating: (0) Feedback Score: 0 reviews	New compression test results: 1: 136psi 2: 134psi 3: 135psi 4: 136 psi all done with throttle closed and fuel. I replaced the spark plugs and it runs somewhat better but still super rich. It will spit and backfire alot. I unplugged the o2 sensor and it runs alittle bit better in open loup. I cant figure out the problem. any help would be great.

07-27-2008, 04:15 PM	#3
drftthatshit Zilvia Member Join Date: Jul 2008 Location: fox lake Age: 33 Posts: 192 Trader Rating: (0) Feedback Score: 0 reviews	sr 20's are super sensitive to change i have noticed they like what they came with on them not sayin doin mods are bad but they need to be tuned for every little thing you do if you changed out the tubo manifold to a diffrent one your car may need a tune

08-26-2008, 07:27 AM	#4
ArmadaJspec Leaky Injector Join Date: Aug 2008 Location: ND Killdeer Posts: 101 Trader Rating: (5) Feedback Score: 5 reviews	I agree with drftthatshit . At least get APEX'i AFC NEO or Power FC L-jetro. Its a win win situation. You will never loose on either one of these products. Along with a Nismo FPR. You will notice a big difference when its tuned right by a Certified APEX'i tuner.