Yes, I had thought about a possible coil problem. There is just one coil with four outputs. Seems unlikely though, that this problem would begin just after I put in a new timing belt. I did check spark at the coil output with the engine idling - and it can jump a 1/2" gap with a blue bolt of lightning.
I reluctantly searched through several Subaru forums - and found one post that's kind of interesting - if true. The guy there states that most aftermarket belts for my engine come with the left-cam mark one-tooth off i.e. marked wrong and puts just the one side of the engine out of time. If true, that IS my problem. My belt is Cloyes brand, not OEM from Subaru. Will having one cam, one tooth off cause a mis-fire code for those two cylinders? I have no idea at this point.
Only way to know for sure now is to pull it back apart and actually count the teeth between marks and check.
I have put in many timing belts with zero problems - but this is the first belt I've ever seen that comes with timing marks printed right on it -to make it "foolproof" I guess. I wish now it had no marks - because then I would of checked timing the old-fashioned way.
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