Oil Leak Top End

McADad

New Member
Hi There, I've got a frustrating situation with a CL 350 project. The bike has been sitting on a table for 3 years due to other priorities. When I got back to it and recently started it on the bench it runs perfect but leaks oil on the top end. What strange is that the oil is coming out around the head cover nuts besides other places on the top end, like its over pressurizing some how. All the gaskets and seals are new all though sitting for 3 years. Anyone ever have this type of issue?
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check that the washers under the nuts on studs that carry oil are soft copper or aluminum. And while you are there, check the surfaces and nuts. Nuts should be closed dome nuts.

It is possible that an oil passage might be partially blocked in the head. The oil pump doesn't generate a lot of pressure.

Try removing a side cover to gain access to an oil feed passage and use a hand oil can to push oil into the system and see if it leaks out.
 
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