Mechanics

CHEVY KNOCKING NOISE WHEN IDLING

2000 Chevrolet Malibu

Engine Mechanical problem
2000 Chevy Malibu 6 cyl Two Wheel Drive Automatic 156000 miles

My car is making a knocking noise. It's loud when idling but it gets quieter as I accelerate. The other day I was driving and it just died on me. Now it wont start over. It starts over once in a while and backfires a couple times and then dies. My brother said that it may be the timing chain? Do you have any ideas what it may be?
Avatar
Noahjohn0301
August 20, 2010.



What engine is this?

Mmprince4000
Aug 20, 2010.
It's a V6 3.1 liter engine

Tiny
Noahjohn0301
Aug 20, 2010.
If timing chain broke, engine would not rotate, since chain would be jammed against crank.

Chain could be loose, affecting timing.

If oil level is full, try measuring the oil pressure wth a mechanical gauge.

Mmprince4000
Aug 21, 2010.