Engine misfire

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10-19-2009, 08:20 PM

Blueser

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Join Date: Oct 2009

Posts: 1

Engine misfire

1995 - SES light indicates a misfire on cly.#4. Changed plugs. wires, cap. and rotor. Still misfires. MPG has dropped dramatically. Smell of gas at startup. Any suggestions?

Last edited by Blueser; 10-19-2009 at 08:24 PM. Reason: add year of blazer

10-19-2009, 08:40 PM

swartlkk

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Join Date: May 2005

Location: Waterloo, NY

Posts: 41,064

fuel leak internal to the engine. Test your fuel pressure to confirm or just pop off the upper plenum and pressurize the system.

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