Direction please…

[PNW_E53_04]

My E53 has around 150k on it, I just recently purchased it and it started bogging like its a fuel issue. I have the 4.8, where should I start diagnosing?


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[getty150]

Originally Posted by PNW_E53_04

My E53 has around 150k on it, I have the 4.8, where should I start diagnosing?


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Perhaps the fuel pump.
Do you hear it start when you initiate the ignition?

[andrewwynn]

I bought a fuel pressure gauge from harbor freight for $30. E53 should maintain very stable 50 psi.

The FPR build into the fuel filter is a cumin fault but if your fuel pump is original it's overdue