Cleaning head before installing valve cover

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Cleaning head before installing valve cover

10-02-2017, 04:25 PM

Graham

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Join Date: Nov 2004

Location: Ontario, Canada

Posts: 4,457

Cleaning head before installing valve cover

In process of adjusting valves on 85 300D, notices that the valve cover gasket sealing surface on the head has a hard black coating in places. Tried painting carb cleaner on and letting it sit, then rub with rag, but it doesn't budge it. Same for brake/parts cleaner.

I don't know if this is varnish or what. I know many of you have these cover off and on more than I have - Have you seen similar deposits? Any suggestions on how to remove?

Pictures below of some of the spots.

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Graham
85 300D

,72 350SL, 98 E320, Outback 2.5

Last edited by Graham; 10-02-2017 at 04:37 PM.

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