Misfire

1990 MAZDA B2600
180,000 MILES • 2.6L • 4 CYL • 4WD • MANUAL
Avatar
CARPROKID
  • MEMBER
  • 1 POST
Engine misses when driving, has plenty of power and otherwise runs smooth. I have replaced fuel pump, filter, ignition switch, plugs, wires, rotor and distributor cap along with the coil. have added heet to gas thinking it might have water in it.
Feb 13, 2019 at 10:50 AM
Advertisement
Avatar
ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
Good morning,

Did you check the compression?

https://www.2carpros.com/articles/how-to-test-engine-compression

Due to the age, I would also inspect the valve train to be sure nothing is worn out.

https://www.2carpros.com/articles/engine-misfires-or-runs-rough

Roy
Feb 13, 2019 at 7:35 PM
🔧 Tools & Auto Repair Parts
Find automotive tools, diagnostic equipment, and replacement parts for your next repair.
Shop on Amazon →
Paid affiliate link. As an Amazon Associate, we earn from qualifying purchases.
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.

Ask a new question

Frequently Asked Problems for This Vehicle