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Went to start the mower today and it had a hard time starting. Once running it sounded like it was misfiring and stalled on me. I could not restart it. I checked for spark and it seemed weak and intermitent. So I replaced spark plug with new one and it started right up but ran rough. Then it stalled again and wouldn t restart for about 20 minutes. Then it started and ran rough again. Could it be the coil? Any ideas? Thanks in advance. Rich

Forgot to post, it has a 15hp kohler engine. Thanks Rich

Wow, thanks for all the help. The responses are overwhelming. This forum is the best.

rwels173 said:

Wow, thanks for all the help. The responses are overwhelming. This forum is the best.

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Ouch...
Hey Rich... not all posts get seen the same day that they are placed...

And actually "This forum is the best."
That Kohler, could have a weak coil... I'm guessing you have already eliminated fuel & fuel delivery as contributing to this problem...
Is the plug wet or dry after it has been running? :smile:KennyV

Kenny, I apologize for the sarcasm. After seeing the thread had 70 plus views I figured no one was willing to help. Anyway, the plug is wet when I pull it after it stalls so it is getting fuel. I kinda think the coil might be crapping out, but don t they usually just stop working all together? IDK Thanks Rich

rwels173 said:

Kenny, I apologize for the sarcasm. After seeing the thread had 70 plus views I figured no one was willing to help. Anyway, the plug is wet when I pull it after it stalls so it is getting fuel. I kinda think the coil might be crapping out, but don t they usually just stop working all together? IDK Thanks Rich

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If you'll look at the bottom of the homepage, you'll notice there is a very small percentage of members to visitors. Visitors can't post, even if they wanna help with your problem. However, I do believe their view is still counted on the counter for 'views'......

If you'll also notice, not all of us have ALL our interests in JD.....:biggrin:

As to your question, I have seen coils go weak before toally failing. Just curious - does your Kohler have a capacitor on it? That sounds like the old JD 110's when they would kinda puke, but not totally....

If it does, try changing it...they're cheap.

And BTW....this IS the best forum out there for this kinda stuff......to echo Kenny.

twall, I do appreciate the help. I do not believe it has a capacitor but I wil check to make sure. BTW how do you like your snapper?

rwels173 said:

twall, I do appreciate the help. I do not believe it has a capacitor but I wil check to make sure. BTW how do you like your snapper?

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I love it, thanks for asking! :thumbsup:

It's going to end up being my only mower, I think. I like the OHV B&S, the shift-on the fly disk drive (and the great placement of the shifter), the great ride, the power, it's just great. I've wanted one for a looong time...finally found one that was a deal I could "snap" on!

Ive looked at them too and always wanted to "try" one out. Maybe someday?

As to your coil issue, when mine went weak, they didn't fire all the time, and thusly, misfired. I'm pretty sure a new coil will fix you right up.

They are worth at least a test drive. I like the cool feel and sound when you change speeds on the fly.....sounds like a hydro.

I kinda thought it was the coil but just wanted to seek out some advice. Thanks for the help. BTW my jd has hydro and I love it. It spoiled me. I do like those snappers though.

I got a chance to replace the coil today. It still runs rough and it stalls if I turn the idle down. Im starting to think its the carb. The strange thing is the week before I cut the grass and it ran fine. Any ideas? Thanks Rich

I had a similar issue with my STX38 which has a 13 Kohler and I took the carburetor off and sprayed
it good with GUNK brand carburetor cleaner and blew everything out real good with compressed air
and it runs like new. You might try a carburetor kit too if you can find one.
Hope this helps...

hacksaw528 said:

I had a similar issue with my STX38 which has a 13 Kohler and I took the carburetor off and sprayed
it good with GUNK brand carburetor cleaner and blew everything out real good with compressed air
and it runs like new. You might try a carburetor kit too if you can find one.
Hope this helps...

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Thanks Hacksaw. I pulled the carb and cleaned it thoroughly and BAM it runs like a top. Thanks again