1979 Mazda RX7 engine backfire

75,844 MILES • 4 CYL • 2WD • MANUAL
Avatar
COW
  • MEMBER
  • 1 POST
i drove my car yesterday and it worked fine. today it starts and revs but if i go pass half throttle the car backfires. i tried to drive and on accelaration it stutters and backfires. i had a new exhaust system installed a week ago i reved the car when i got back and a piece of the catilyst came through the tail pipe.
Dec 6, 2007 at 2:24 PM
Advertisement
Avatar
2CARPRO JACK
  • ✓Experienced Mechanic
  • 11,533 POSTS
How much of the exhaust system did they replace? If they left the same muffler, it could be plugged up with the guts from the cat converter. This will cause both things you describe
Dec 7, 2007 at 6:40 AM
Add a reply
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.

Frequently Asked Problems for This Vehicle