Need help ASAP please!!!
Need help ASAP please!!! Ok so Let me start by sayin, I have read and googled everything about this but i have yet to find something that relates to my issue.
Now I have a STOCK 2000 LS1 A4 with ls6 manifold, truck coils, and ported throttle and tuned on HP Tuners on my 240sx. The issue im having and it started over night is this.
When i go WOT or just rev the motor passed 5000rpms it goes SUPER SUPER RICH from 11.5 to the 10.5 AFR. Now i dont hit a wall when this happends BUT it does break up all the way through the rest of the revs to 6500rpms.
What i have done so far. I have changed wires and plugs.
I have a log of the car on a WOT throttle i will post tomorrow.
I also opened the valve covers and the springs/retainers are not broken, and pushrods are good. But it does not feel like valve float but i could be wrong.
Car has no DTC's what so ever. But i have lost over 25 WHP when i put it on the dyno a week ago. Which is is really pissing me off.
If anyone can please shine a light or point me to an idea i can look into. Thanks I just want to take my car to the track and race the damn thing...
Now I have a STOCK 2000 LS1 A4 with ls6 manifold, truck coils, and ported throttle and tuned on HP Tuners on my 240sx. The issue im having and it started over night is this.
When i go WOT or just rev the motor passed 5000rpms it goes SUPER SUPER RICH from 11.5 to the 10.5 AFR. Now i dont hit a wall when this happends BUT it does break up all the way through the rest of the revs to 6500rpms.
What i have done so far. I have changed wires and plugs.I have a log of the car on a WOT throttle i will post tomorrow.
I also opened the valve covers and the springs/retainers are not broken, and pushrods are good. But it does not feel like valve float but i could be wrong.
Car has no DTC's what so ever. But i have lost over 25 WHP when i put it on the dyno a week ago. Which is is really pissing me off.
If anyone can please shine a light or point me to an idea i can look into. Thanks I just want to take my car to the track and race the damn thing...
I was thinking that but the log shows them fine imma post the log now give me 10 min
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here is another log i just did on the way home and i noticed something... Take a good look at the LTFT B1 and LTFT B2 see the difference???
The first one is a WOT pull and look at the LTFT B1 compared to LTFT B2
and the second one is Just driving and reving up to the 5000rpms
The first one is a WOT pull and look at the LTFT B1 compared to LTFT B2
and the second one is Just driving and reving up to the 5000rpms
Last edited by s13vette; Feb 19, 2013 at 06:48 PM.
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You are carrying an extra 12% fuel into WOT from you LTFTs. Based off the o2 switch points you are not going that rich. I realize they are not real accurate for WOT stuff but they can give an indication of an extreme over rich condition as you are describing and it doesn't reflect that.
I would look at ignition problems or voltage issues.
I would look at ignition problems or voltage issues.
You are carrying an extra 12% fuel into WOT from you LTFTs. Based off the o2 switch points you are not going that rich. I realize they are not real accurate for WOT stuff but they can give an indication of an extreme over rich condition as you are describing and it doesn't reflect that.
I would look at ignition problems or voltage issues.
I would look at ignition problems or voltage issues.
Thanks for the help everyone please keep thinking lol im still running around in circles
