1991 Chevy Cheyenne engine

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

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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1991 Chevy Cheyenne engine

1 Reply

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