1986 Chevy Suburban engine Idle fast and idles rough

1986 CHEVROLET SUBURBAN
900,000 MILES • V8 • 4WD • AUTOMATIC
Avatar
BUTERBEEN13
  • MEMBER
  • 1 POST
My 86 K20 I recently did a tune up and carb rebuild since then it idles fast and a little rough I tried adjusting the timing back for the idle but then the engine wants to pop thru the carburater I have also tried adjusting the air/fuel mixture screws but nothing is chaning Im at a loss.
May 1, 2010 at 2:57 AM
Avatar
RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Try adjusting the choke opening and fast idle cam adjustment and also for vacuum leaks.
May 1, 2010 at 7:23 AM
🔧 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