05-07-2024, 08:32 AM | #1 |
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Rep 4
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Need help only does this after setting overnight and running lean on bank 1
Recently done tune up new mass air flow Can’t find any vacuum leaks either The rpm vary from 1500 to 600 |
05-07-2024, 04:00 PM | #2 |
Nothin to see here
87
Rep 81
Posts |
Hello. It appears that you have a good sized vacuum leak. How are you looking for vacuum leaks? Even the cheap Amazon smoke testers work just fine for this. Highly recommend the smoke machine for pinpointing these kinds of leaks.
Other things that I've seen cause excessive ST/LT fuel trims are cheap aftermarket Valve covers, shoddily installed aftermarket intakes, and of course any hose connected to the intake. Good luck to you. |
Appreciate
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