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Soot on the external top head (Read 2 times)

augh Ex Member	Soot on the external top head 07/18/05 at 01:19:15 The other day disassembling the tank to adjust valves, I noticed all around the inlet valves cover a black soot. I do not understand how this combustion soot can exit the chamber and be on the external engine surface. Any similar thing happened to you ? Tx Augusto.
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Savage_Greg Serious Thumper Alliance Member Offline Don't go around your ass to reach your elbow... Posts: 7844 SW Washington State Gender:	Re: Soot on the external top head Reply #1 - 07/18/05 at 12:15:48 I have a guess....unless you've seen anything leaking on the engine.... Your valve cover had a small weeping leak, and that is just road dirt stuck in the oil. Not to worry, unless you have other symptoms.
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augh

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Re: Soot on the external top head
Reply #2 - 07/19/05 at 01:04:33

Tx Greg , but the funny thing is that is really soot, not road dirt. There is no oil on the surface , below the soot, that can grab it.
I believe that it's coming out from the inlet valve that doesen't close properly and let some combustion gas leave the chamber. But I can't understand how this soot can leave the cylinder head cover, if its coming from the valve leaking. The head cover is externally clean from oil. I do not understand it. Could come out from the spark?? Or any other place?? Augusto.

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