1991 CHEVY CHEYENNE ENGINE

  • Tiny
  • scottnalicia
  • 1991 Chevrolet Cheyenne

Engine Mechanical problem
1991 Chevy Cheyenne V8 Four Wheel Drive Manual 300000 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 Answer

  • Tiny
  • hmac300
  • Expert
  • 43,024 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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