Question about 2007 Chevrolet Silverado 1500 2WD
Started a couple weeks ago... started faintly but now getting slightly louder... used a stethascope and found the noise to be coming from inside oil pan... not a ticking or knocking, more of a slighty rythmic rubbing or scraping. oil pressure if fine as is oil level.... no apperent oil leaks or consumption... the truck has 75k miles on it and regularly maintenanced
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Posted on Jan 02, 2017
if noise is higher pitched and coming in on valve time...(2wice for every revolution of motor..ie: faster)...then upper end pressure is down due to sludge, wear , lifter failure, valvespring failure,rocker stud lifting out of cylinder head (kinda common) cam bearings failing (very rare)..oil pump bypass stuck open..and a few other possibilities... respond and we will go over lower end sound (deeper ,slower) and see what identifies your issues .... miles
Posted on Dec 05, 2008
Hello, I see you have a trailblaber with a knocking noise. It sounds like you have an electric fan clutch issue. Believe it or not your vehicle has an electric fan clutch. It looks just like the older non-electric but if you look on the driver side of the fan shroud that is the wire connector you see. It is an exspensive part just for the clutch but thats exactly what you are describing. It doesn't get louder just fast with rpms. Please rate my answer, Thank you
Posted on Mar 06, 2009
SOURCE: suddenly running rough
Well, it could be a couple of different things. The "jump timing" theory would have a poor engine performance and engine miss associated with it. So I don't believe this is the problem.
If the ticking or knocking sounds like it is coming from the top of the engine, you have a clasped lifter, bent push-rod or rocker arm problem.
Is the noise present when the engine is cold or hot?
Make sure the oil does not look milky.
Let me know.
Posted on Mar 15, 2009
SOURCE: 1998 s10 oil leak
well it wont be the oil pan seal then cause they never leaked that much. I would go back and look at the filter he put on. could be just a problem with it. for the cost of one put another one on and make sure the gasket surfacce is clean down to the metal engine block.
Posted on Apr 06, 2009
SOURCE: oil pressure drops to 0 at idle
OOO not good sounds like some of the head gasket got stuck somewhere, or the gauge or sender is bad or got knocked around when repairing the head gasket. I would check that first. If that checks out will need to drop the pan to see if something got stuck in the pickup tube,might as well change the pump while you are there. Or worst case some thing wrong with gasket job impeading oil flow back to bottom of the engine. Was the oil and filter changed ?if so pull out filter and see if an chunks are stuck in it now. And change oil and filter again. Sorry that was out of order I had a long day
Posted on Apr 24, 2009
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