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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 349 (5.7L Engine (Service Information) - 2500 Hd & 3500 Hd) >> Engine Block >> Lifter(S), Hydraulic, Roller >> Diagnosis And Testing >> Diagnosis And Testing - Hydraulic Tappets >> High

Diagnosis And Testing - Hydraulic Tappets: High

WARNING: This page is about a different car, the 2013 RAM 3500 HD and 2013 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

If the oil level is above the FULL mark, it is possible for the connecting rods to dip into the oil. With the engine running, this condition could create foam in the oil pan. Foam in the oil pan would be fed to the hydraulic tappets by the oil pump causing them to lose length and allow the valves to seat noisily.

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