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
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Saturday, July 31st, 2010 AT 8:24 PM

1 Reply

Tiny
HMAC300
  • EXPERT
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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