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Boxcar Wllie

Cracked Coils (Pics)

9 posts in this topic

I posted this on the St. Cloud Area forum and didn't get a response. Maybe some more people on this forum can point me in the right direction. I know of a used parts dealer in the cities (Shokepee) that could help me out but was looking for something closer. Any help would be appreciated.

The motor starts but doesn't keep running and it has a lot of fuel like it is flooding. I think that it might have to do that the coils are cracked and their isn't a good consistant spark? Any other signs of what cracked coils might be doing to my motor?

So I am for sure looking for two coils (used but operational) for a '76 Johnson (15R76A)(Part number #0581407). I can't get her to keep running and I have two large cracks running down both of the coils. I don't want to pay top dollar in case that isn't the problem, USED would work just fine. Thanks

Here are some pics.

Thanks,

Minners

Motor005-1.jpg

Motor010.jpg

Motor011.jpg

Motor008.jpg

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they dont really look cracked.. im guessing its more of a carb issue.. as long as they arnt shorting out id say theyre fine..

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If you have an opportunity to run it in the dark with out the hood, you will see spark jump out to ground.

Have you checked the compression? kinda looks like its been hot before.

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boatfixer:

Haven't checked compression. Although just pulling it over it still "bumps" along as though it still has decent compression. What would cause you to believe that it was hot before? Just wondering. I figured that the spark would be running down the side of the plugs and that is what casued the burned black underneath them. Would there be more indications if she cooked?

Thanks

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The discoloration or the spots that appear to be burned. I'm not saying that I'm sure it has cooked, but when I see something like that, the first thing I like to do is a compression test. Use a good compression tester to check compression.

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Have you done a compression test and verified that you have a spark problem, or checked for spark right after it dies?

marine_man

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Quote:
If you have an opportunity to run it in the dark with out the hood, you will see spark jump out to ground.

I had a '74 Evinrude 15hp (very similar to this model) I sold to a friend, and I had noticed that a spark jumped from the rubber spark plug cap to the engine block. Because of this, the engine would not run!

I took the rubber plug cap off the wire and placed the wire to the plug directly...no more jumping spark, and engine ran. Can you explain that?

Maybe see if yours is acting this way minners?

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