losing PSI
Thread Starter
Teching In
Joined: Oct 2015
Posts: 13
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losing PSI Long story short, I'm trying to track down a hard start issue. I think I've got it narrowed down to a fuel pressure problem.
Stock 06 lq4 in my Silverado.
Key on - 58-60 psi
Running - 58-60
It seems like it holds at 55+ for a while. Left the gauge on the other day and it dropped down to 40psi in 45 minutes.
How much leak down is too much?
Should I pull the rails and see if injectors are leaking? If its jot injectors, that only leaves the pump/regulator assembly, right?
Stock 06 lq4 in my Silverado.
Key on - 58-60 psi
Running - 58-60
It seems like it holds at 55+ for a while. Left the gauge on the other day and it dropped down to 40psi in 45 minutes.
How much leak down is too much?
Should I pull the rails and see if injectors are leaking? If its jot injectors, that only leaves the pump/regulator assembly, right?
