engine miss

[NATES]

Come on guys sure could use help...2000 OX66 200hp skips a beat when running along at over 4000rpm's, momentary miss. pulled the water seperator & no water in the gas.
Is there a plug on the engine for a test computer.

[jb123]

have you cleaned vst tank and filter?
replaced motor filter ?
run on an aux tank hose and ball ?
changed plugs recently ?