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99 PCM 351 runs rough after warmed up

h2oskier

New member
My engine starts up great and initially runs fine. Even if I run it without skiing it runs great. However, after engine is warmed up... the first skier gets a good set, but the 2nd set the engine struggles. It runs very rough then and feels like it is running on 6 cylinders. Yet, it never dies.

My local Nautique dealer has worked on this since last summer and has replaced: carb, coil, fuel pump, cap, rotor, and I tried draining and refilling fuel tank. Spark plug cables are about 5 years old.

Nothing we have tried has helped. Any ideas?
 
Is the coil hot to the touch when the engine is fully warmed up, & has this issue? Your coil could be breaking down
 
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