1990 60 hp johnson ignition problem

[rick001]

I have a 1990 60 hp johnson that won't get spark intermittently. Sometimes it starts and runs great then dies and won't get spark. Then after a short time it starts. When it won't fire, it is all 3 cyls. so I kinda ruled out the coils.

 

[boobie]

Re: 1990 60 hp johnson ignition problem

Go to CDI Electronics and look up their troubleshooting guide. This may help.

 

[rick001]

Re: 1990 60 hp johnson ignition problem

Go to CDI Electronics and look up their troubleshooting guide. This may help.

I went to cdi electronics troubleshooting guide, and got it down to under the flywheel. I got the correct values when it fired and none when it did not.(coming out of the flywheel). I guess now I need to take the flywheel off and go from there.

 

[boobie]

Re: 1990 60 hp johnson ignition problem

Sounds like you're on the right track. Could you narrow it down to what componet it is ??

 

[Blacksting]

Re: 1990 60 hp johnson ignition problem

all 3 cyls. so I kinda ruled out the coils.

not so fast , my new2me 70hp was worked on before i got it . didnt now it . had weak spark for a month till i snapped 2 plug wires onto the coils good and tight . ,..............ran like a champ for about 3 minutes till the shear pin went on the flywheel . i guess it wasnt torqued down to 105lbs.

 

[rick001]

Re: 1990 60 hp johnson ignition problem

Sounds like you're on the right track. Could you narrow it down to what componet it is ??

I think the stator, I get the correct resistance values, but no voltage.(coming off the stator) Then after I crank it for a few minutes the voltage will go up for a few seconds then go to zero again. I haven't had time to pull the flywheel yet, to check for a shorted wire. But hope to get to it soon.

 

[boobie]

Re: 1990 60 hp johnson ignition problem

What kind of test equipment are you using ??

 

[clanton]

Re: 1990 60 hp johnson ignition problem

Look for melted stator, will drip on block. The bracket that the pack mounts is also also a ground, bolts must be clean and tight for a good ground. ground wires on bracket must be clean and tight. Look for bare pack wires behind the bracket.

 

[rick001]

Re: 1990 60 hp johnson ignition problem

What kind of test equipment are you using ??

A digital multimeter, a analog multimeter, and a spark tester.

 

[rick001]

Re: 1990 60 hp johnson ignition problem

A digital multimeter, a analog multimeter, and a spark tester.

I also pulled the big red plug and jumped the solenoid, still had the same problem.

 

[rick001]

Re: 1990 60 hp johnson ignition problem

Look for melted stator, will drip on block. The bracket that the pack mounts is also also a ground, bolts must be clean and tight for a good ground. ground wires on bracket must be clean and tight. Look for bare pack wires behind the bracket.

I checked the ground to the pack, but I'm not getting voltage to the pack, except sporadically. I haven't pulled the flywheel yet, but looking underneath, it looks like there is something running down the wires.

 

[rick001]

Re: 1990 60 hp johnson ignition problem

Well, I pulled the flywheel and the epoxy had melted and ran down the wires. The wires going into the stator feel flimsy, like they bend real easy. So I ordered a new stator, fingers crossed. Like I said in previous post, the resistance values were within limits, but only occasional voltage coming out of the stator. The problem started out only happening once in a while and gradually progressed to happening most of the time. Before I pulled the flywheel, it would start after cranking for a while, then only run for a few minutes before losing spark at all 3 coils. With a voltmeter connected, the voltage out of the stator would come and go.

 

[rick001]

Re: 1990 60 hp johnson ignition problem

Just to give a update, it turned out to be the powerpack. I replaced it and it ran perfect.