Now here's something interesting......at least to me it's interesting.

When I first purchased the car it was giving only the #6 misfire code, so after changing the water pump, I pulled the codes again and still was getting only the #6 misfire code.

So I replaced the #6 ignition coil but the misfire didn't go away and eventually I started getting the multiple misfire code (p0300) and the other 4 misfire codes for cylinders 5,6,7 and 8.

After changing the plugs, switch the ignition coils from one side to the other.....I still pulled the mutiple misfire codes for all cylinders on driver side.

Then I changed the valve cover gaskets, the intake manifold gaskets and the throttle body gasket and after that I only pulled the #6 misfire code. But a few days later the other misfire codes came back.

Now i changed the oil and today I checked the codes and the only one I pulled was the #6 misfire code.

I did disconnect the battery earlier, so it may just take a while for the other codes to generate.

But I do find it odd that the #6 misfire is always constant but the others are not. Seems strange that #6 always throws a code days before the others.

If the vanos is stuck in an open position, causing for the cam shaft to be turn x degrees all the time, that would mean all of the cylinders are equally off in their timing. So that would also mean they should all throw the same codes at the same time.

Your thoughts....

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2000 X5 4.4i w/ 150K miles.