Question about 1990 Chevrolet C1500
Have a 1990 Z71 4wd that hasn't been drove very much over the last 12 months. After driving it 4 miles today, I started to hear a loud knocking noise. Thinking its a lifter (?)because it hasn't been drove much. It's a 350 engine and 150K for miles. I would like to fix this myself.
I'd consider some fresh, clean oil & filter change first of all, if it hasn't been done . drive it for a while providing it isn't too bad, & see if it goes away, if not get back to us.
Posted on May 18, 2009
A loud engine knock or a clattering at the valve cover? The best way to verify a knock(as in rod knocl) is to drain the oil and check for dull silvery or copper particles. drain to drain the oil into a clean drain pan. Lifters sound more of a clicking or clattering.. If you have a gauge and not an oil light, note your oil pressure. A bad rod does not noticebly affect oil pressureA bad main brg has little effect on oil pressire. Again, note your oil pressure.. Let me know, but do not rev up the engine or you can put a rod through the block. We can go from there if you still want to fix it yourself..-
Posted on May 18, 2009
After changing intake gaskets on a 99 Chevy Express Van 5.7, I have experienced the supports inside the valve cover ( the type that has bolts down through ) coming out of adjustment after fighting to remove the cover from all the hoses and wires that sounds kinda like a knock type noise/sound. It drove me crazy until I removed the cover and noticed the rocker rubbing inside. Once I straitened the support and reinstalled it the noise was gone.
Posted on Oct 23, 2012
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Posted on Jan 02, 2017
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