Usually timing won't be off enough to misfire from lazy vanos but it's easy enough to swap bank one and two and it's usually the intake that causes the problems. Since all the plugs are likely the same age and the misfires all bank two, there is a good chance.

I would swap vanos intake banks and go up a hill with the trailer and see if you can reproduce the problem.

If the errors follow the part you've found the source.

Do you have a scanner that can monitor vanos angles? Especially helpful if it will graph them.

I've done more work on m62 than n62 but every rebuilt m62 i had problems with the cps so there's a good chance a tired CPS is at fault and that's even easier to swap.

If cps is not reporting the correct angle the engine will put the vanos in the wrong place.


–awr–

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2011 E70 • N55 (me)
2012 E70 • N63 (wife)