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OK, needless to say I am wondering what the big flood is all about in the engine pan….
The sneezing or coughing is not an ignition miss, it is how these engines react to a lean fuel mix. Unfortunately, this is one of the newer engines that incorporates a recirculation system to eliminate the fuel dump… These engines will never idle as nicely as the older models, I feel the recirculation system causes uneven conditions between the two cylinders. Leaning the adjustment out for the smoothest idle usually results in a lean spit/cough. So, you usually have to richen it up a bit, sacrificing idle smoothness, to avoid the lean spit. This sometimes results in fouled plugs unfortunately. Again, it is extremely important to make sure these engines heat up sufficiently to minimize fouling, and for the best idle quality….