knock when hot

[berty]

hi all. seemed to have picked up a knock when engine hot. no unusual noises when engine cold.

any ideas ?? or experiences of same

1170 et

[wraith]

Worn cam, if so more annoying than a problem.

[johnr]

assuming youve checked the usual, flywheel nut, starter clutch 3 bolts and probably most common, carb balance causing the clutch to rattle. does the knock go away when you pull in the clutch?

[berty]

Yep done all the usual checks , carbs bang on . and knock stays when clutch in . 

Leave engine until cool and knock disappears - most annoying !! 

[Guest YoshiJohnny]

cam end float possibly depends on where it's emanating from