'94 626 idle problem

[nuheriot34]

My '94 626 has an idling problem. With the clutch in the engine revs between 800-2000 rpm. The engine changes idle speed a few times a minute. I had a mechanic look at the engine and he sprayed something near the back passenger side of the engine and it made the idle rev up. He said that it was probably a head gasket leak. Anyone have any input on what this problem is and/or how to fix it? The engine has 192,000 miles. I was thinking about using some RTV silicone to try to plug up any leaks there might be in the head gasket. Any help would be much appreciated. Thanks.

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[gforce]

sounds more like a intake gasket leak. headgaskets leak oil & coolant not vacuum which is causing your idle to change when he
sprays it, must be a 4 cy 2.0l, seen alot of intake gaskets go out on them at higher milage.

[zr1mark]

Hi,

Any idea what an intake gasket should cost ?
My Son's car just went in for one........

Thanks,
Mark