Originally Posted by RightSaid fred
(Post 11799150)
A misfire causes a lean spike not a rich spike.
So it's misfiring because the AFR isn't right, the logger shows lean afterwards. Your fuel pressure will be wrong of course......lol. |
So im gonna call this a misfire then.
Because i dont thknk its fuel or boost cut. |
Have you pulled the pump yet? Do that before you post anything else. ;)
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Originally Posted by razorlab
(Post 11799179)
Have you pulled the pump yet? Do that before you post anything else. ;)
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Originally Posted by 4b11slayer
(Post 11799208)
Yes i pulled it yesterday. No issues found. Pick up sock was dirty but not clogged. I cleaned it with brake cleaner and high air pressure.
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Originally Posted by razorlab
(Post 11799266)
What did the OEM filter look like. Not the sock, the one embedded in the white plastic assembly. If it looks really dark, it might be clogged. That is what happened to me twice. New assemblies fixed everything.
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Originally Posted by 4b11slayer
(Post 11799280)
So your not referring to the pick up sock? The one that clips to bottom of pump
You can also see it in this thread where the OP cuts it open: https://www.evolutionm.net/forums/ev...-evo8-9-a.html http://norcalmotorsports.org/users/b...pAssembly2.jpg |
Originally Posted by razorlab
(Post 11799291)
No, the filter in the white plastic housing:
You can also see it in this thread where the OP cuts it open: https://www.evolutionm.net/forums/ev...-evo8-9-a.html http://norcalmotorsports.org/users/b...pAssembly2.jpg I wana eliminate spark plugs and coils first. The plugs i threw in were not brand new but they were about 2500 miles. Im gonna try new plugs and borrow some coils. |
Originally Posted by 4b11slayer
(Post 11799020)
Have not performed fuel pressure test.
Also I can take the car to 6500 rpm part throttle |
Originally Posted by 400s
(Post 11799359)
Are you passing 20 psi on part throttle with no issues?
I did it last night i did 3rd gear part throttle and hit 25 and it was smooth. No stutter good afr. So it only happens on WOT. |
I'm gonna pull an RSF and ask if you know what your fuel pressure looks like.
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Originally Posted by razorlab
(Post 11799377)
I'm gonna pull an RSF and ask if you know what your fuel pressure looks like.
No i have not performed a fuel pressure test. I will try and get my hands on a guage today. So it should be 43.5 base with or without vaccum line? And 43.5+ boost? |
Originally Posted by razorlab
(Post 11799377)
I'm gonna pull an RSF and ask if you know what your fuel pressure looks like.
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Originally Posted by Biggiesacks
(Post 11799388)
A broken clock is right twice a day lol
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If fuel pressure tests ok. Whats next guys?
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