1994 Mazda 929 Missing

1994 MAZDA 929
11,500 MILES • 6 CYL • 2WD • AUTOMATIC
Avatar
ERWIN84
  • MEMBER
  • 1 POST
We just bought this as a used care and of course it didn't start to miss until about a week later. The problem seems simple enough, but I'm not quite sure what to replace. It seems to miss through out the rpm range, but only now and then - even at idle, but not to noticable. The spark plug wires have been replaced before, but I wouldn't count them out either. Is there any sure fire way to check which cylinder is missing? I'm assuming it's not an intake leak since it's not constant, would this be correct? Thank you.
Sep 9, 2008 at 10:23 PM
Advertisement
Avatar
RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
You need to know when was the last major tune up-if in doubt get it done. To find a dead cylinder run the engine and start disconnecting sparkplug wires one at a time -the one that doesn't cause the engine not to drop in rpm is the trouble area.
Sep 9, 2008 at 11:53 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.