Engine / Transmission Z22yh high pressure fuel pump repair

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Z22yh high pressure fuel pump repair - Z22yh high pressure fuel pump repair

This is a step by step guide to repairing your high pressure fuel pump ONLY IF THE THREE PUMP SEALS ARE OK!!! I had the usual fuel pressure problems with the P1191 etc codes, so decided to strip my pump to see what had actually failed.

The issue with the pumps is over time the oil they are pre filled with at the factory seeps through the oil seal into the engine, thus losing the hydraulic action of the actuators inside the pump, and in turn loss of high pressure fuel delivery. The fill port...

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