Piston Pin


Piston Pin

A piston pin does a couple of jobs at the same time. It properly secures a piston to a connecting rod, while allowing the connecting rod to pivot when the piston goes up and down.


Signs of a bad piston pin

  • Abnormal noises (knocking or slapping) from the engine

Piston pin repairs and maintenance

  • Piston pins are not a part of your routine maintenance. However, you should check and replace them if needed whenever the engine is rebuilt.
  • Failed pistons lead to serious internal engine damage, which is why an entire engine replacement may be required.
  • If the cylinder head is not damaged by a failed piston pin, you can replace the engine block (short block) instead of purchasing a new or remanufactured engine.
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