N57 Replace rocker cover gasket (seized injectors)

[GreyGhost 3]

Hi All,

My E70 40D (N57 engine) has a tiny oil leak from the rocker cover gasket. I put it in the shop to get the gasket replaced but after much trying the shop gave up because they couldn't remove a couple of the injectors. Any tips or tricks for this? Is it really necessary? Any help appreciated.

Cheers

Nick

[Cammsport 390]

Unfortunately it is necessary, and a pain in the a**. Likely from leaking injector seals.

The best way is to do multiple soaks of some form of penetrant (not too much) and hope some hot/cold cycles free them up. If no success, you'll have to have a crack with a slide hammer hammer. See below. DO NOT DAMAGE THE INJECTOR! Very expensive.