1989 Evinrude 200xp lost Spark after removing Sparkplugs for compression test

[Lentine95]

Hey all, so as title states I lost all spark to my 1989 Evinrude 200XP sparkplugs after I did a compression test yesterday. I had it running good and steady and would start turn of the key when it warmed up. But, I ran out for 30min to get a compression tester and it would not start again after I tested all the cylinders (made sure everything went back to where it went). Did a spark test today and all plugs had 0 spark. Wondering if anyone had any incite into what they think it could be, feeling like it could be the powerpack that failed on me but seems odd that it'd die after 30min after running perfect.

Little back story on motor for what it's work- picked it up for free on the back of a Mako 22 I just bought. Previous owner said it died out on him and had a camera check and the cylinders were messed up and it wouldn't start. When I got it in drained the fuel bowl of pure 2strokessential oil, unclogged every water line from sand, salt and grime build up, and then it fired up and ran great before this incident. Also, compression was 80, 45, 80- 80, 80, 80. Noticed that the cylinder with 45 had a real burnt up/rusty ignition coil.

Thanks for any help

 

[flyingscott]

Did you pull the lanyard off when you did the compression test and forget to put it on. Or unplug anything else.

 

[Lentine95]

No, I haven't touched the lanyard until after this happened to see if that possibly was the cause. Also in plugged the kill switch wires (black/yellow) to see if there was a kink or short somewhere with them. Only things I removed was sparkplugs, and the boot off the sparkplugs. I looked at the other smaller boots form the powerpack to ignition coils and they seemed in pretty rough shape. All rusted and deteriorating and the wires seemed not too strong. Also the one with the worst rustand deterioration is the cylinder with 45psi. Was reading elsewhere that a bad powerpack could mess up cylinders, not sure if could've caused that

 

[Faztbullet]

Powerpack has nothing to do with compression, the one with 45psi needs inspected....

 

[Lentine95]

Well I found the problem was the ground. Previous owner grounded in a really terrible spot. So I put the grounds in a new spot and all plugs now get spark. However, one doesn't seem to maintain spark. The tester lights up for a second and then goes off. Going to try to move a coil pack and see if the problem moves with the coil. I know the 45psi needs some attention, but I was going to try to warm up the motor and run some seafoam through to see if its possibly a carbon build up and check what the PSI is then. Was told all of them were shot and didn't run, but so far I'm pretty happy with how things are looking so far.

 

[Lentine95]

No Title

Figured I'd give the piston a check and this is what I found. Could feel some grooving on wall, don't known if this is something that can be honed out, but tonly me it look like the piston is quite centered. Took a new PSI test today after I warmed it up and I got 90, 45, 85 and 90, 90, 90. After doing the test u went to retest and the 45 was no 0 and the gauge would only flutter and not hold pressure.

 

[Faztbullet]

Rebuild time as it dropped a ring....that's why piston edge is damaged. These motors have a know problem of piston ring migration so replace all 6 no matter how they look

 

[Lentine95]

Okay thanks didn't know really what could've caused this. Think a hone job will suffice or really couldn't tell until get a good check over and measurements?