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Jim Grant Tech Tips Jim Grant Tech Tips
A collection of helpful articles based on reader submissions
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  Jim Grant's Tech TipsJim Grant's Tech Tips
Below is a collection of Jim Grant's Tech Tips sorted by Vehicle Make. These Tech Tips were answers to questions submitted to Jim by ALLDATAdiy.com users over the course of many years.
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  Jim Grant's Tech Tips

95 Nissan Quest, Oil Leak
Q: We have a Ď95 Quest with 85k on it that has developed an oil leak. You can smell this oil leak as it is burning on the exhaust manifold. I did remove the plastic shields from the underside and I do see that oil is leaking on the lower part of the studs of the exhaust manifold where it attaches to the engine. I have a mechanic friend coming to take a closer look, he thinks the leak is from the valve cover gaskets up above, but I see no wet path from there. Any thoughts on this?... thanks -Chris

A: Iím right there with your friend on the valve covers being the cause for your oil leak. The valve cover gaskets on your vehicleís engine are made out a of rubber-like compound. The gasket will harden and shrink with age, which explains why these gaskets are a common service item. Let your friend get to work and repair that oil leak and hope itís the valve cover gaskets. The next area for a possible cause is not so easy to work on! Oil leaking on a hot exhaust manifold is a fire hazard that cannot be ignored.

 
     
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