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No spark???


 
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Jeff Hamilton
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Joined: 15 Apr 2014
Posts: 23


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PostPosted: Thu May 13, 2021 3:43 pm    Post subject: No spark??? Reply to specific post Reply with quote

52 8N, side mount. 12V, 12V coil. New tires. I'm frustrated that I can't figure this out. I backed the mower up to the barn and took it off. Motor running fine. Later, I tried to start it up. I smelled and
noticed the gas dripping from the carb and said dang, forgot to turn off the fuel and that damn float stuck again (known, recurring problem with the cheap carb I have - I just deal with it). So, it's flooded.
Drained the carb using the plug, removed the air inlet hose at the carb and let it dry overnight. Next day tried again to start - no good. Damn. It was running well when I turned off the key - no sign of
ignition trouble. But, decided to check spark spark at the plugs - nothing. Poked around the wires looking for something - nothing. I have power at the points (spark jumps points when I crank it). Points
seemed a little close, so reset to .025. Still no spark at the plugs. I'm not one to just start replacing crap, but I have lots of parts on hand. I washed up and came inside to post this. I assume that by
tomorrow morning someone will tell me what I should check next. Oh, and I have plenty of fuel going to the carb -and I also tried a little ether (I know ... bad bad bad), wouldn't even cough. Thanks in
advance.
 
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HCooke
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Joined: 29 Sep 2006
Posts: 5714
Location: Missouri

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PostPosted: Thu May 13, 2021 4:10 pm    Post subject: Re: No spark??? Reply to specific post Reply with quote

wouldn't even cough.

Even ether requires a spark!

I would replace the points.
 
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Smokeonthewater
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Joined: 09 Apr 2021
Posts: 249


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PostPosted: Thu May 13, 2021 5:21 pm    Post subject: Re: No spark??? Reply to specific post Reply with quote

Test everything along the path from battery to spark plug till you find the problem....
Volts at batt, volts at coil w points both open and closed, test coil, etc...
When you find the bad component replace it....
 
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Eman85
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Joined: 30 Jun 2015
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PostPosted: Thu May 13, 2021 7:46 pm    Post subject: Re: No spark??? Reply to specific post Reply with quote

Do you own a test light? If it's negative ground connect the test light clip to ground and touch the negative side of the coil while cranking the engine with the key on. Light should blink. If no blink pop the cap and check for power at the points, I think you said you had that. If so then shut the key and run a points file through the points. You can make the coil spark just by moving the points with a screwdriver or jumping across them.
 
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zuhnc
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Joined: 22 Apr 2019
Posts: 121


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PostPosted: Thu May 13, 2021 7:59 pm    Post subject: Re: No spark??? Reply to specific post Reply with quote

Some of us have been known to leave the rotor out Sad. zuhnc
 
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