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ignition coil melted ground wire #4642837
01/22/18 12:36 PM
01/22/18 12:36 PM
Joined: May 2013
Posts: 133
Peace valley, Missouri
Fitter30 Offline OP
Fitter30  Offline OP
Joined: May 2013
Posts: 133
Peace valley, Missouri
03 Yamaha Kodiak 450. coil melted the ground wire from coil to a connector that connects 5 ground wires before going towards battery. coil is bad measures 8 ohms,power wire for the coil is in good shape, coil is bolted to the chassis with the ground wire sandwich between coil and chassis.Haven't got it running yet,but can't figger out what happen to the coil that melted the wire and didn't blow a ten amp fuse.

Re: ignition coil melted ground wire [Re: Fitter30] #4642869
01/22/18 01:15 PM
01/22/18 01:15 PM
Joined: Sep 2015
Posts: 1,523
USA
mk378 Offline
mk378  Offline
Joined: Sep 2015
Posts: 1,523
USA
If the ground wire from engine to battery fails, starter current could flow in the smaller ground wires and burn them.

Re: ignition coil melted ground wire [Re: Fitter30] #4642873
01/22/18 01:16 PM
01/22/18 01:16 PM
Joined: Sep 2004
Posts: 7,522
Marshfield , MA
andyd Offline
andyd  Offline
Joined: Sep 2004
Posts: 7,522
Marshfield , MA
Total guess. The coil's secondary windings shorted. Voltage but very low amperage. Check wires for fraying at ends and continuity. No clue but my Ford and Jeep use fusible links and one may have opened. Please post followup TIA


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Re: ignition coil melted ground wire [Re: Fitter30] #4643536
01/22/18 11:51 PM
01/22/18 11:51 PM
Joined: Dec 2017
Posts: 397
Massachusetts
VeryNoisyPoet Online content
VeryNoisyPoet  Online Content
Joined: Dec 2017
Posts: 397
Massachusetts
Definitely check all other ground wires and connections between engine block, chassis, and battery. A wire melting down like that without blowing a fuse means current leaked or was forced from somewhere else. Starter, charging system, etc can all cause enough current to heat a smaller wire red hot if the larger proper ground wire is broken or corroded.


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Re: ignition coil melted ground wire [Re: Fitter30] #4650007
01/29/18 11:53 AM
01/29/18 11:53 AM
Joined: May 2013
Posts: 133
Peace valley, Missouri
Fitter30 Offline OP
Fitter30  Offline OP
Joined: May 2013
Posts: 133
Peace valley, Missouri
Ground wire from battery to engine was corroded at the engine and the CDI box was bad.Wire that melted and the coil had to be from trying to find a ground. Thanks for all the help.

Re: ignition coil melted ground wire [Re: Fitter30] #4664416
02/12/18 11:59 PM
02/12/18 11:59 PM
Joined: Apr 2004
Posts: 3,662
los angeles
daves66nova Offline
daves66nova  Offline
Joined: Apr 2004
Posts: 3,662
los angeles
Originally Posted By: Fitter30
Ground wire from battery to engine was corroded at the engine and the CDI box was bad.Wire that melted and the coil had to be from trying to find a ground. Thanks for all the help.
Did you already buy another cdi box? You know you can wire a GM HEI module to make it run again. Go to youtube and type in hei mod https://www.youtube.com/results?search_query=hei+mod


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