Compression Ignition Addict
Join Date: Sep 2007
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White can also be fuel. Post cylinder/incompletely combusted fuel is black (soot).
It's possible your valve seals are worn. When the engine shuts down oil leaks down the valve stems and onto the valves/into the cylinder (depending if they're open or close) then it'll burn upon start. Ussually if your burning oil its either rings or valve seals (short of gasket failures/cracks) in a basic engine. A compression test will tell you if its rings but since its only upon startup thats very unlikely.
Although I've never heard valve seals having problem on these. I'd look somewhere else but its an idea.
Are you losing oil?
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