My first thought would be like yours since you were in the engine I would be going back and verify everything as well. Having said that, I have never determined how a mis-fire is actually sensed. In my daughter"s VW Jetta it seems to be only related to ignition signals. She had a CEL on with a cylinder 2 mis-fire reported. Changed plugs with no effect, went on to wires still not getting improvement. Now codes are also reading a cylinder 4 misfire. Find out that in this ignition system cylinders 1 and 3 "share" a coil as do 2 and 4. Replaced the "coilpack" and CEL went away and mileage improved from 25 mpg to almost 27. Your situation just reminds me of this so I would remind/recommend that you go through ignition.
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Today's Featured Article - Earthmaster Project Progress Just a little update on my Earthmaster......it's back from the dead! I pulled the head, and soaked the stuck valves with mystery oil overnight, re-installed the head, and bingo, the compression returned. But alas, my carb foiled me again, it would fire a second then flood out. After numerous dead ends for a replacement carb, I went to work fixing mine.I soldered new floats on the float arm, they came from an old motorcycle carb, replaced the packing on the throttle shaft with o-rings, cut new ga
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