Fueling & Injection - Walbro at 40 psi, 25% LTFT's




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mike171562
08-11-2011, 03:47 PM
I have been trying to find out why my Long Term Fuel Trims are at 25%, I checked all around for vacuum leaks, but could not find any.

I checked my Fuel pressure today and its
at 30Psi with the key turned on, When I start the motor it goes to 40psi and stays there , is this too low? and could this be why my LTFT's are so high?

The pump is only about 6 months old.


Lonnies Performance
08-11-2011, 07:49 PM
Running pressure should be 58. This is your problem.