I have a 2003 F250 and it started making a popping sound over piston 3 passanger side it makes the tubes on top of the rocker cover bounce. Valve problems?

Asked by Guru1BDVB Sep 02, 2019 at 09:13 PM

Question type: Maintenance & Repair

1 Answer

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by rocker cover you mean valve cover, yes? And by tubes, you mean the PCV breather hose? If that is moving/popping, clean it out, as well as the PCV elbow and valve. It may be gunked up with emulsified oil. Once that is clean then evaluate engine performance. You can run a leakdown test to check valves and seals, as well as a compression test.

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