08-06-12, 02:17 PM
Oil pumps have a pretty easy life so long as there's something there for them to pump.
This looks more typical of a dropped valve: either metal fatigue causes the head of the valve to drop off or over-revving gives the retaining collets at the top of the stem the chance to jump out.
This looks more typical of a dropped valve: either metal fatigue causes the head of the valve to drop off or over-revving gives the retaining collets at the top of the stem the chance to jump out.