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Old 1 Week Ago
LAPPER's Avatar
LAPPER LAPPER is offline
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Join Date: Dec 2007
Location: Buderim
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Inlet cam timing

The inlet cam on my 350 EXC has jumped right out of alignment . Miles out
The timing chain seemed ok - not noisy . Any ideas why this would happen ?

Do I need to get them to check the valves ?
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Old 1 Week Ago
Arctra's Avatar
Arctra Arctra is online now
"The Crack Of DOOM"
Join Date: Sep 2009
Location: Sydney (Penrith area)
Posts: 3,268
Not sure what you mean by "jumped out of alignment" but assume you mean you've checked the position of the cam sprockets and the little lines don't line up when on TDC (Top Dead Center)? If you are certain that they were fine when they were last done that does sound odd. Only way I can think of that happening is coz your cam chain tensioner isn't working properly so is letting the chain skip over teeth. But even then, it would be making one hellava racket that would probably stop you riding.

Are you 100% certain you're checking the alignment of those marks when it's on TDC rather than BDC (Bottom Dead Center)?
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