30 H.P mariner-yamaha with a miss

[pcola1]

Tested the spark and 1 cylinder will fire fine while the other will miss,next time it might be the other cylinder firing good and the one one that was fine before will now be missing,never will both fire perfect,,just one good and the other with a miss,,stumps me,,would it be the primary coil or the c.d.i unit or trigger device? anyone? waynebo

 

[Ray Neudecker]

Re: 30 H.P mariner-yamaha with a miss

Need a model number to help. Some of the older models used points.

 

[pcola1]

Re: 30 H.P mariner-yamaha with a miss

689 L 411977 any ideas would be great,,wayne

 

[pcola1]

Re: 30 H.P mariner-yamaha with a miss

bp