1992 15HP Johnson 15RENM with weak spark. year corrected

red039 · May 21, 2022

Top cylinder only jumps a 1/4" gap, lower cylinder jumps a 1/2" gap. any suggestions on what to look for next .

racerone · May 21, 2022

Switch the orange / striped wires and report test results.----Test spark that way as motor will not run.

red039 · May 28, 2022

racerone said:
Switch the orange / striped wires and report test results.----Test spark that way as motor will not run.

Purchased two replacement coils . Sierra. Big mistake ! I got a weaker spark then the weak OEM coil. I just reordered .

Boobie · May 29, 2022

Try a different power pack.

faztbullet · May 29, 2022

Tis not the coils fault..they only step up what they are given. Either pack capacitor is weak or stator voltage to pack is low

racerone · May 29, 2022

Pull plug with black / yellow stripe wire apart.----Test spark.