Hallo I'm writing from Germany, so plesae excure that my english isn't very good.
I'm got a 1989 Chevrolet Astro Van with the 4.3l v6 Z TBI engine. The Milage is about 160000 miles.
The engine runs good. No starting problems, power is good, but there is a strange noise that I can't locate.
If the engine oil get older (round about 4 month) the engine start to make a rattling noise. The noise only appears under load / acceleration. At driving time at 55 miles/h no noise is there.
Change the engine oil fixies the problem. But I drive not much, maybe 400 miles a month. That cannot be the problem.
Do you got any idea what's wrong with the engine?
Best regrads Frank
have the same problem?
Thursday, August 16th, 2007 AT 5:36 PM