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Engine + Driveline / Re: 92 m42 swap to 95 E36 318is
« on: April 17, 2014, 12:38:00 PM »
I saw your pm. The old motor is allready installed on a friends E36 drift car project, just to move it around.
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Vacuum leak causes a lean condition, but your O2 tries to compensate giving you an overall rich condition. Its weird, but thats how it works!
That would not have anything to do with what you posted though.
Did you have the head pressure checked during the rebuild? In my experience running rich is usually caused by a vacuum leak.
As long as the restrictor is still in place and not loose, I wouldnt worry about it too much. Its not ideal, but if the rest of the head is in good shape there isn't much point in switching it out.
Do you still have the numbers, when cylinders were measured? Diameter...
I think your problems will be with cylinders, which will be worn or oval, or just not honed. Spark plugs just show that you have the same problem in all cylinders...
On the photo it looks like youre engine is running a bit to rich.
BUT, the looks also depends on WHEN you did remove the sparks. Did you drive a short distance before removing, or a normal way so that the engine really got on operation temperature.
