Question about 2003 Buick LeSabre
I have a 2003 Buick Le Sabre with 90,000 that has a knock that comes and goes. It seemed to be in the rockers and I found that half of them showed excessive wear at the push rod/ rocker contact area. The engine has always had regular oil changes, there is no sludge inside and it holds 60 lbs of oil pressure and oil shoots out of all the the holes in the rockers with the valve cover off. Is it normal for these parts to wear out this quickly?
The lifter/ push rod contact area shows minimal wear, machine marks are still present .
This is not normal for this engine. The only oil problem that does happen with these is when the oil pick-up screen becomes clogged. The oil pan will need to come off to clean it. The only knocking problem with these 3800's is the harmonic balancer that may need to be replaced. It will make more noise with the ac on.
Posted on Feb 17, 2010
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