1991 Chevy Cheyenne engine

Tiny
SCOTTNALICIA
  • MEMBER
  • 1991 CHEVROLET CHEYENNE
  • V8
  • 4WD
  • MANUAL
  • 300,000 MILES
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
Saturday, July 31st, 2010 AT 8:24 PM

1 Reply

Tiny
HMAC300
  • 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.
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Sunday, August 29th, 2010 AT 8:29 PM

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