Crankcase pressure

[Rawze]

something is definately wrong. That amount of wear is not normal at all.

Also make sure the crank is not being pressed inward by the transmission or clutch assy. It can cause those problems too.


If the truck has an idle shut-down feature, some drivers are known to put a stick on the clutch pedal to defeat it. That can cause issues like your are showing too.

A clutch improperly adjusted where there is never any play in the pedal will do it too.