To Much Fuel at WOT?
Thread Starter
Supreme Member
Joined: Oct 1999
Posts: 2,977
Likes: 1
From: Davison / Troy ,Michigan
Car: 1991 Pontiac Firebird
Engine: 3.8
Transmission: 700r4
Axle/Gears: Dana 60
To Much Fuel at WOT?
How do I know if I am getting to much fuel at WOT? I just got done adjusting my fuel pressure higher and the car runs great but when I floor it, it dies around 3800-4500rpm's. So bad that I can tell at the seat. Is that a result of to much fuel at WOT?
Moderator
Joined: Jan 2000
Posts: 19,660
Likes: 311
You'd really have to monitor the exhaust gasses to be certain. A heated O² sensor connected near the heads with an EGA would tell you right away.
It's also very possible (if not likely) that at 4,500 RPM you are starting to get valve float from the low pressure stock springs. Even with the realatively mild factory cams, valve float at that RPM is not uncommon. Once the valves stop complying with the cam profile, it's "game over" for any more power.
It's also very possible (if not likely) that at 4,500 RPM you are starting to get valve float from the low pressure stock springs. Even with the realatively mild factory cams, valve float at that RPM is not uncommon. Once the valves stop complying with the cam profile, it's "game over" for any more power.
Thread
Thread Starter
Forum
Replies
Last Post
mdtoren
Tech / General Engine
0
Aug 16, 2015 05:45 PM