1989 Mazda b2200 Smog problems and loss of power

1989 MAZDA B2200
70,000 MILES • 4 CYL • 2WD • AUTOMATIC
Avatar
KTHONGRAK
  • MEMBER
  • 1 POST
Hello there. I have a 89 mazda b2200. Its carb. I have a issue with smog. I pre tested it and it has hi knocks. I adjusted the timing and tested the EGR valve and they both are good. I dont know what to check next. I also have a power problem. It is really slugish. It barely goes 65 mph on the freeway. Plz any advise will help

Thank You
Sep 16, 2008 at 5:25 PM
Avatar
RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
High NOx ( Oxides of Nitrogen )

NOX failures are usually EGR-related, since the EGR system is primarily responsible for reducing oxides of nitrogen. But NOX emissions can also be caused by a bad three-way converter or a computer control system that remains in open loop.
Sep 16, 2008 at 5:43 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