Originally Posted By: BuickGN
This is what I've been posting about. Two engine failures, worn in the worst possible way, about 8 UOAs between the two and only one showed slightly elevated but single digit lead. In other words the UOA caught nothing even though every surface in the engine was toast.
I hear what ur saying but I should clarify that we are talking about failure of one specific part, the cam follower, which is smaller than a thimble. Related parts that also wear due to the failure are one lobe of the intake camshaft (this lobe is for the fuel pump) and the tip of the high pressure fuel pump, which sits outside the engine (all parts are shown in the photos). Not arguing against your point, just clarifying that wear is from those parts. No indication that the small metal bits did damage elsewhere but who knows for sure really.