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Inlet valve cleaning


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I’ve been looking into some maintenance items for my CS and one I came across was inlet valve cleaning as I’m guessing on a 15yo car there may be some carbon build up.


Has anyone any experience in this, the options as I see it are:


1) manually clean with tags and engine degreaser (good video on garagetech’s very good YouTube channel on this)

2) use something like seafoam cleaner, there’s a few videos in the US for non Porsche’s 

3) pay someone to do it

4) don’t bother 


any helpful thoughts appreciated!

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