Test power pack & Stator

[Zack19919853]

what is a way to test a power pack and stator. I feel like I’m getting weak spark. But want a sure way of knowing the power pack and or stair are not going out. I have a 1990 evinrude 88 spl

 

[racerone]

The elegantly simple way is to do a spark check.-----Does spark jump a gap of 7/16" on a test device , yes or no ?-----And how do you suspect " weak spark " on your motor ?

 

[Zack19919853]

The elegantly simple way is to do a spark check.-----Does spark jump a gap of 7/16" on a test device , yes or no ?-----And how do you suspect " weak spark " on your motor ?

Well both plugs on the port side are wet but have not signs of burnt fuel as they appear to still look brand new. As the starboard side looks to be firing. It runs rough and well not wot. Idles rough.. also just want to be sure it’s working properly. I have tested the gap some time ago. I’ll check it again though. Yes it has jumped a nice blue spark across all except number 3 cylinder. At that time needed a coil as it was dead. I’m thinking power pack. Because one whole side isn’t firing.

 

[racerone]

If it fires across a 7/16" gap with a " snap " there is not much wrong with ignition system.-----Post your compression numbers here.

 

[Zack19919853]

If it fires across a 7/16" gap with a " snap " there is not much wrong with ignition system.-----Post your compression numbers here.

I will when I get home from work.

If it fires across a 7/16" gap with a " snap " there is not much wrong with ignition system.-----Post your compression numbers here.

Cylinder 1 - 120psi
Cylinder 2 - 120psi
Cylinder 3 - 120psi
Cylinder 4 - 115psi
Compression isn’t too bad at all! I’ll check spark again today maybe if the wife lets me.. lol

 

[Zack19919853]

If it fires across a 7/16" gap with a " snap " there is not much wrong with ignition system.-----Post your compression numbers here.

Ok so I have spark on all 4 but then it goes intermittently back to constant then it’ll stop completely… I’m not sure why..?