coils


Information and questions on GL1100 Goldwings (1980-1983)
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joetice46@gmail.com
Posts: 2
Joined: Sun Apr 04, 2021 3:38 pm
Location: enterprise,Alabama
Motorcycle: 1982 gl1100a interstate

coils

Post by joetice46@gmail.com »



I have power going to all 4 stab ons on coils but no spark at plugs


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Maz
Posts: 803
Joined: Tue May 19, 2015 4:43 am
Location: Kent, UK
Motorcycle: 1975 GL1000K1
1976 CB500T
1979 CB750L
1990 Yamaha FJ1200
1993 Suzuki GS500E

Re: coils

Post by Maz »

Not sure what 'stab ons' are, but if you have 12v on one side of coils, check that the other side is grounded when the points close. Check also that the points are opening and closing as spark is generated when the points open.
Maz
Ironically, Common Sense is the LEAST common of all senses!
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DenverWinger
Posts: 1940
Joined: Thu Jun 23, 2011 2:20 pm
Location: Denver, CO
Motorcycle: (s)
1980 GL1100 STD Vetter (2005-)
1993 GL1500 Aspencade (2017-)
1983 Trav-Lite Camper (2010-)
Past rides
1972 CL350 (1980-1988) sold
1978 Suzuki GS550 (1985-2005) sold
1977 GL1000 (2002-2006) sold

Re: coils

Post by DenverWinger »

No points on 1100, there's two small Electronic ignition modules under the shelter on the left side that like to drip black goo. They work off two pulse-generator coils. On my '80 they are on the rear of the engine, not sure what year they got moved to the front.

One pulse generator feeds one Electronic ignition module which fires one coil which fires two spark plugs. Essentially two separate ignition systems, highly unlikely both systems failed at once.

The black goo dripping out of the little ignition modules is a common report, and doesn't seem to hurt anything, evidently they were made with a sealer that has too low a melting point. These units very rarely fail. I'd start by looking at connectors in the lines going to the pulse generators.

How are you determining there's no spark? Both sparkplug wires from a coil must have a path to ground or they won't spark. If you have all sparkplug wires disconnected from the plugs and you are checking for spark at one of them you won't have any, unless the plug wire from the opposite side is either grounded or connected to a grounded spark plug.
♫ 99 Little Bugs in the Code, ♪
♪ 99 Bugs in the Code. ♫ :(
♫ Take one down, Patch it around, ♪
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~Mark
User avatar
Maz
Posts: 803
Joined: Tue May 19, 2015 4:43 am
Location: Kent, UK
Motorcycle: 1975 GL1000K1
1976 CB500T
1979 CB750L
1990 Yamaha FJ1200
1993 Suzuki GS500E

Re: coils

Post by Maz »

My bad. I was thinking of my GL1000!
MAZ


Ironically, Common Sense is the LEAST common of all senses!
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