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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 comments

5 Comments

Gary Skogheim

Jul 24

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

Jul 24

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Replying to

Since you don't have a year on this post I should probably mention the difference. From 07-14 non direct injection engines they are very rare to have a leaking VLOM. In 14-18ish AFM with direct injection it's really common to have a leaking VLOM. In fact I Even have a video dedicated to it and the VLOM mod.