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#4 intake rocker doesn't move when engine running

#4 intake rocker don't move when running ,but when I turn the engine over manually , both rockers move normal. Both rockers are tight when not running, Is there a problem with the VLOM . Exhaust rocker moves when running.

5 commentaires

Gary Skogheim

24 juil.

I cranked the engine with key off , both rockers move after 6 cranks, however you said the vlom must be on, how I do that?

Crazed Performance Repair

24 juil.

•

En réponse à

To check the VLOM you need to pull it off and pressurize the main oil port under the oil pressure sensor with air and check for leaks. Those solenoids are normally closed so without power to them they shouldn't leak. I still think it's going to be a spun lifter though. These VLOM (07-13) rarely have a failure where they leak like that. Besides that, if the VLOM was leaking it would effect both lifters not just one. You most likely didn't have oil pressure build up and you would have to do the test twice in a row. I should have probably mentioned that as well.

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