1991 Chevy Cheyenne engine

1991 CHEVROLET CHEYENNE
300,000 MILES • V8 • 4WD • MANUAL
Avatar
SCOTTNALICIA
  • MEMBER
  • 1 POST
My truck won't stay running unless you keep your foot on the gas and when doing so its back firing and shooting flames from the fuel injectors
Jul 31, 2010 at 1:24 PM
Advertisement
Avatar
HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
short each cylinder out by removing plug wires from plugs one at a time. When you find the offending cylinder check for compression, it may be either a bent/broken pushrod or valve spring/valve or burnt valve..
Aug 29, 2010 at 1:29 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