I was wondering I have got an 86 pontiac 6000 with 106k miles on it and it
has a 2.5 engine, it kinda sounds like a sewing machine when its running,
like clattering, is this normal for this engine, and if so is this engine a
good one to have?
Yeah, in those years, that particular engine used
camshaft/crankshaft gears instead of a chain and
sprockets. The camshaft gear was a fibre gear and
as it wore, the engine would begin to rattle like
a diesel engine. The fix is to replace the cam
and crank gears. It won't hurt the engine to
run it like this....just one day, the teeth on
the cam gear will strip off and the engine will
quit. It's not an interference engine, so you
don't have to worry about other damage.
It wasn't a great engine, but it wasn't that bad.
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