Engine backfires and the belt squeals

2000 CHEVROLET BLAZER
137,619 MILES • 4.3L • 6 CYL • 4WD • AUTOMATIC
Avatar
SWEYER
  • MEMBER
  • 2 POSTS
Starts and runs, sometimes backfires and the belt squeals often. Not entirely sure what the problem is.
Dec 17, 2017 at 11:51 AM
Advertisement
Avatar
ASEMASTER6371
  • CERTIFIED EXPERT
  • 52,796 POSTS
Good morning my name is Roy and I will assist.

Backfiring means spark when it was not called for. check all you ignition components first. That is, plugs, wires, cap and rotor. While the plugs are out, do a compression test to verify the engine is good and it will also tell if you have a timing chain issue.

Try this and get back to us with the results.

Roy
Dec 17, 2017 at 11:07 PM
Avatar
SWEYER
  • MEMBER
  • 2 POSTS
Thank you I will try that and get back to you. thank you again.
Dec 17, 2017 at 11:20 PM
Advertisement
Avatar
ASEMASTER6371
  • CERTIFIED EXPERT
  • 52,796 POSTS
You are welcome.

Roy
Dec 17, 2017 at 11:23 PM