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Bad coil problems

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Old Aug 10, 2018 | 11:45 AM
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Default Bad coil problems

I believe I have a bad ignition coil. I have 97 FXDWG. Im getting a consistant 3.2-3.4 ohms at the primary spots but not getting anything for the secondary that connect to plugs. Ive tried from 20M to 20K settings on the meter. I can run the bike pretty normally but the idle seems like its hungover or tired or something. Super weak. My short shots sound like a lawnmower that is a few hundred feet away. I also seem to foul the hell out of my plugs even though im running a modest 45/180 jet set up on my CV

Is the lack of power Im experiencing common with a bad coil?
 

Last edited by BiggCliff412; Aug 10, 2018 at 11:46 AM.
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Old Aug 12, 2018 | 01:10 PM
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I charged up the battery and tried to pull the plugs to see if I got a spark. Couldnt start it
Pulled the ignition coil assuming that the secondary coils are the issue since Ive gotten a reading only once and that was the meter going up past the 10-12k and then falling back to no reading. My coil went from starting after a click or two to not turning over at all in a matter of 2 days. 😡
 
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Old Aug 13, 2018 | 07:14 PM
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From: poway
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When you measure the secondary, are you measuring across the 2 secondary outputs?

Your coil won't have anything to do with motor not turning over. Not starting? Yes. Sounds like you have a bad battery.
 
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Old Aug 13, 2018 | 07:20 PM
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Its a brand new battery. Not even 100 miles with it. Charges up to 13ish but will dwindle to 12.6 but thats it. Unless a bad voltage regulator killed the battery???
 
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Old Aug 13, 2018 | 07:43 PM
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From: poway
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Put your voltmeter across the battery and look at how low the voltage drops when you punch the start button.
 
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Old Aug 15, 2018 | 05:29 PM
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So I get the new ignition coil and this is what happens a few times before it decided to stay running. But about 15 seconds later. It dies. I walk away for a few mins, come back. it fires and stays on for a minute or 2. I give it a tiny bit of throttle and it starts spitting and sneezing right away
 
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Old Aug 15, 2018 | 06:15 PM
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From: poway
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Is the carb clean? How is the fuel? New?
 
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Old Aug 15, 2018 | 07:13 PM
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Rebuilt carb. Everything. All new jets, slide, orings, air screw etc. Fuel is fresh. Drained the tank before I had knee surgery june 1st. Has about 1.5 gallons of fresh 93 from sunoco.
 
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Old Aug 15, 2018 | 07:19 PM
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Originally Posted by BiggCliff412
Rebuilt carb. Everything. All new jets, slide, orings, air screw etc. Fuel is fresh. Drained the tank before I had knee surgery june 1st. Has about 1.5 gallons of fresh 93 from sunoco.
Well is sounds like you need to turn the idle up.
 
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