1991 Cadillac Deville backfire

1991 CADILLAC DEVILLE
147,000 MILES • V8 • 2WD • AUTOMATIC
Avatar
FLACO283
  • MEMBER
  • 1 POST
my cadillac backfires and blows the mufflers, What can it be?
Jan 24, 2009 at 4:53 PM
Advertisement
Avatar
RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Too rich or lean mixture, excessive carbon, hot valves, wrong sparkplug heat range and ignition timing off, and sparkplug wire leaking into another
Jan 24, 2009 at 4:59 PM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.