Hi guys.

I have a problem with my R254 marine gas engine.
Last time I was out sailing around, my engine suddanly quit running.

Now it has an intermedant weak spark every 2-3 seconds......instead of the nice blue spark at every stroke it had when new.

Is there an easy way to messure on the source coil, and ignition coil to find out which component is malfunctioning ?

I have checked all the connecting wires for shorts and continuity, and it all looks good.
Since it still produces a weak spark every 2-3 seconds, then maybe it is difficult to isolate the fault [:@]