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c/diesel-mechanicshill.andrewhill.andrew18d agoMost Upvoted

I chased injector noise for 3 days before checking the lift pump pressure

In my shop outside Tulsa, I pulled a 7.3 Powerstroke apart chasing a tick that turned out to be a tired lift pump starving the injectors at highway RPM. That 55 psi reading on the gauge made me realize I'd been blaming air in the lines for months when the pump was just weak. Anyone else skip the cheap fuel pressure test and go straight to tearing down the top end?
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the_dylan
the_dylan17d ago
Wait 55 psi at idle or under load?
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