Intake Manifold Vaccum Leak
09-04-02, 04:57 PM
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Intake Manifold Vaccum Leak
Ok, first off I have a 90 GXL I just got done installing a rebuilt engine. When I go to start it up the there is a vaccum leak. I think the leak is either at the intake maniflod between the engine block and the manifold or between the upper and the lower intake manifold. I have not tested yet. I think my problem is with the gasket(s). I put them on dry. would i be able to put some silicone on the gaskets to seal the leak? When i got the engine the directions said to put the gaskets on dry, so i am thinking that it might be bad to put silicone on the gaskets.
09-04-02, 06:31 PM
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I hate vacuum leaks. Did you use the metallaic lower gasket between the engine and manifold? Putting them on without silicone sealent should be enough, check your vacuum lines maybe?
09-04-02, 07:40 PM
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silicone isn't going to hurt anything, just don't glop it on, you don't want it getting into the intake and restricting airflow. Make sure you odn't have a wire or old gasket material keeping you from sealing properly. Also doublecheck all vacuum lines and plugs.
PaulC
PaulC
