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Sludge Under Valve Cover

Started by ajw85, May 25, 2016, 12:29:13 PM

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ajw85

May 25, 2016, 12:29:13 PM
I'm checking the valve clearance on my bike. It's at 9,000 miles.
I found all this crap under the exhaust valve cover. Oil sludge? Is this indicative of any sort of problem?

FYI
Top cylinder exhaust unloaded measurement was scraping the feeler at 0.005"
Top cylinder exhaust loaded measurement was scraping the feeler at 0.010"

Speeddog

#1
May 25, 2016, 01:12:19 PM
That's the paint blistering off.
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Duck-Stew

#2
May 25, 2016, 02:57:30 PM
+1 to the paint blistering off.  I just leave it as is. 

BTW, that means your valve clearances are 0.005" opener and 0.005" closer.  Or, just about perfect!  I'd definitely leave those as is.
Bike-less Portuguese immigrant enjoying life.

cencalal

#3
May 25, 2016, 07:16:22 PM
Like many others, my M695 had the melted and blistered paint on the outside of the heads near the exhaust ports.  I was able to easily - and carefully - remove it with ordinary paint remover.  But why did they paint the inner surfaces - is this just incidental overspray?
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