slight knocking in engine

Asked by warlock Feb 16, 2019 at 11:26 PM about the 2005 Ford Ranger

Question type: Maintenance & Repair

slight knocking sound in backmost piston of engine. not quite sure what could
be causing it. thoughts are either bad O rings or too much oil as it's not
overflowing with oil but is overfilled. need help determining the issue

1 Answer

If it is piston slap the engine is quite worn. If the engine is significantly overfilled with oil the oil can foam up. Drain out the excess right away.

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