New coil, now no spark. Argh.


Technical information and Q&A applicable to all years and models of Goldwings
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SteveB123
Posts: 842
Joined: Thu Apr 05, 2012 9:29 am
Location: Winchester, Ontario, Canada
Motorcycle: 1982 1100I, 60A Poorboy, MSD coil

New coil, now no spark. Argh.

Postby SteveB123 » Fri Mar 29, 2013 12:11 pm



New Neon coil, with relay mod,
Battery voltage at centre connection at coil.
Variable voltage (+1V, as per Honda manual) at two outer "switching" connections during cranking.
Boosted from the car so no issue with voltage.
Wires, boots and coil connections test fine.
Coil tests fine against published resistance values.
Coil connection checked a hundred times.


No freakin' spark at plugs grounded to engine.

Before I loose it....any thoughts?


Current:82 GL1100 Interstate, 60 Amp Poorboy, MSD coil
Previous: 93 GSX1100F Katana
82 GL500 Silverwing

User avatar
SteveB123
Posts: 842
Joined: Thu Apr 05, 2012 9:29 am
Location: Winchester, Ontario, Canada
Motorcycle: 1982 1100I, 60A Poorboy, MSD coil

Re: New coil, now no spark. Argh.

Postby SteveB123 » Sat Mar 30, 2013 12:23 pm

A good nights sleep, and lovely day to poke around in the garage. Calmly. Methodicly, even.
Backed up to the bike three prong connection to test the coil connector. Good.

Test for spark directly at coil, with spark tester. No good.

Finally....hear CLICKING during cranking, and figure out where it's coming from. Originally thought it was the choke plates clattering around, as I could see the shafts twirling back and forth.

My relay mod relay was switching on and off during cranking !! NO idea why, but whatever. Clipped the B/W wire from bike connector, to the coil centre "power in" connector.

My ancient spark tester lights up.....crackle, crackle......under cranking.

NOW I can see if all my carb rebuilding was any good!

Edit: Buttoned thing back up a bit, and (ahem) corrected the eletricians faulty work at the relay connection. :oops:

It quite literally thumbed alive. After a winter, and after a carb rebuild.
Gently thumb the starter, and it was burbling happily away.

Insanely good starts now. Well worth it.....once you wire the relay correctly. :D
Current:82 GL1100 Interstate, 60 Amp Poorboy, MSD coil
Previous: 93 GSX1100F Katana
82 GL500 Silverwing

User avatar
Fulcrum
Posts: 181
Joined: Thu Mar 07, 2013 1:54 pm
Location: The Falls, Texas
Motorcycle: 1982 GL1100

Re: New coil, now no spark. Argh.

Postby Fulcrum » Sat Mar 30, 2013 2:52 pm

Congrats buddy! Now go out and burn up some dinosaur juice...

User avatar
SteveB123
Posts: 842
Joined: Thu Apr 05, 2012 9:29 am
Location: Winchester, Ontario, Canada
Motorcycle: 1982 1100I, 60A Poorboy, MSD coil

Re: New coil, now no spark. Argh.

Postby SteveB123 » Sun Mar 31, 2013 4:36 pm

Happiness is a warm valve cover.


Current:82 GL1100 Interstate, 60 Amp Poorboy, MSD coil
Previous: 93 GSX1100F Katana
82 GL500 Silverwing


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