Winter maintenance project 4.6is

[jontezan]

Removed tdc pin and cam blocks. I was going to crank the engine a couple of turns, then realine the timing parts. Then i saw the intake camshaft making some weird moves. Is this normal? The vanoses are empty on oil, is that was causing it?


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[X53Jay4.8is]

Originally Posted by jontezan

Removed tdc pin and cam blocks. I was going to crank the engine a couple of turns, then realine the timing parts. Then i saw the intake camshaft making some weird moves. Is this normal? The vanoses are empty on oil, is that was causing it?


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The Intake Vanos does flip back due to its ability to retard and advance. When you are turning it it should be done manually to make sure you have not interference. Basically turn the engine with a big socket and bar.