Mechanics

CHEVROLET OTHER ENGINE PROBLEM

2006 Chevrolet Other • 160,000 miles

When I start the engine it runs smooth, but some times I heard noise like tappet sound in idling, but if I raise the rpm, then it become smooth running, Then sound like injection & tappets, How can I clean the lubricating system with out open an engine. Please, advice me.I changed water pump, coolant belt, new battery, belt tensioner, flushed oil system with flushing oil, and replaced new high quality oil with filter, previous owner not maintained well, Oil removed from engine was black stick, My car is Chevrolet Lumina model 2006[commodore]
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Guest
October 18, 2012.




Change the oil every 5000 miles for 2 times and see if it helps. Otherwise it will have to opened up to see which lifter is sticking.

Roy

ASEMaster6371
Oct 18, 2012.


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