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A dead miss can sure make a mess. The cylinder that misses will build up gas which will wash the oil off of the piston rings in that cylinder.
If that wasnt bad enough, the 2.2's had closed loop fuel control. The oxygen sensor looks for oxygen, and pushes the mixture leaner until it gets some. Then once it does, it pushes the mixture richer until there is none. Then it goes the other way again, back and forth all day long.
If there is a constant miss, there will always be oxygen in the exhaust. The system will go richer trying to get rid of it. SInce it cannot get rid of the oxygen it will continue to push the mixture richer until it is as rich as it can go. This will wash the rings on all the cylinders, and take quite a bit of life off of the rings. it will just make the engine burn oil, which is not the end of the world, but something to be avoided if possible.
It also will dilute the engine oil with gas. How much damage that does I guess depends on whether the oil ever gets changed.
John
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