ignition loses spark

[Shorebum]

I have 130 johnson 2000. it loses spark after about 20 minutes under load. It comes back after about 4 hour cooldown. Stator charge side was bad so replaced stator. Now charging and rectifier tests good. Tested stop circuit and got no voltage from switch side (black/yellow) until engine ran on hose for about 1/2 hour, started registering .2 volts intermittently with engine running. Power pack side of black/yellow was 200 to 300 volts, all over the place with engine running. Any thoughts, key switch or power pack?

 

[Shorebum]

Re: ignition loses spark

bump

 

[Chris1956]

Re: ignition loses spark

Disconnect the blk/yellow ign kill wire at the PP, when you lose spark and see if the spark returns. if so, troubleshoot ign keyswitch and wiring in between.

 

[jtexas]

Re: ignition loses spark

when you say "...no voltage from switch side (black/yellow) until engine ran on hose for about 1/2 hour, started registering .2 volts intermittently..." where in the circuit are you measuring? I mean, from the keyswitch M terminal to engine block ground?

And "...power pack side..." -- same question.