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8. Shown is a damaged cam support plate, which was removed from a stock engine with a shifted crankshaft. Take note of the circular wear marks caused by oil pump wobble, which was due to an out-of-true pinion shaft. The gouged area allows oil to leak between the support plate and pump, which quickly gets worse as the engine is run. Eventually, the pump's scavenge side cannot keep up with the feed side, and excess oil collecting in the engine is tossed out the head breathers. View Related Article
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