Question about 1994 Pontiac Sunbird

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My Sunbirdis bouging at the start, have changed fuel pump, sensor, fuel filter, throttle body.

2.0 litre, automatic, ap. 200,000 km, sat for two years, but problem started after drving it for a few mouths.

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  • Tom Robertson Feb 17, 2012

    Thank for the help, found the problem last night, head gasket is gone.

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Did you change out all of the gaskets involved as well? This would include the intake manifold gaskets as well. Sitting for two years, most of the gaskets have dried out and shrunk. Also check for vacuum leaks around all of the intake connections as well. You can use smoke or a spray can of either, or propane. When close to a vacuum leak the smoke or spray will be sucked in and in the case of the either or propane the idle will smooth out for a few seconds.

Posted on Feb 16, 2012

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