VIKING_MECHANIC
GMT 400 obsessed Swede.
As some of you know, I've been suspecting a fuel issue on my C1500 over the last few weeks. After watching several videos, reading posts on this forum and just reading through the Hanes manual and I could also smell gas in the intake, I decided to replace the pressure regulator.
After about 3 hours, I had it replaced, checked everything and went to start the engine. It ran for about 5 seconds before it died. Each time I would start it, this knock/rattle sound would give progressively louder to the point it would drown out a normal conversation.
Obviously after the third start my focus changed from why it was dying to why it was making a knocking sound. I haven't yet checked the oil pressure manually or checked the oil and filter, but when it was briefly running the gauge was showing 80psi.
Could the pump fail to the point where the sensor can get a good reading but not lubricate the bearing? I know the only way to truly know is to take off the oil Pan and check everything.
This is the intake after I took off the plenum. Notice the yellow varnish, corresponding to the running rich on drivers' side and lean on passenger.
After about 3 hours, I had it replaced, checked everything and went to start the engine. It ran for about 5 seconds before it died. Each time I would start it, this knock/rattle sound would give progressively louder to the point it would drown out a normal conversation.
Obviously after the third start my focus changed from why it was dying to why it was making a knocking sound. I haven't yet checked the oil pressure manually or checked the oil and filter, but when it was briefly running the gauge was showing 80psi.
Could the pump fail to the point where the sensor can get a good reading but not lubricate the bearing? I know the only way to truly know is to take off the oil Pan and check everything.
This is the intake after I took off the plenum. Notice the yellow varnish, corresponding to the running rich on drivers' side and lean on passenger.
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