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1986 GL1200 Interstate motor stops

833 Views 17 Replies 9 Participants Last post by  CAREYS1
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I have a 1986 GL 1200 that will just sop running at highway speeds. when I pull over it will restart but might back fire now and then before it restarts. any help out there
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Someone should be along soon to help, but while you're waiting;
Welcome from the state of Pennsylvania!






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Welcome to the Forum. The pulse generator coils located behind the timing belt cover are fairly notorious for killing an engine when hot. But don't generally allow a restart until cooled off for 20/30 minutes.



You can download a manual for your Wing from the Ref/FAQ section to further help in your trouble-shooting. It sure sounds like ignition problems. But you may also want to chech-out the fuel delivery system.



Check back, as your sure to get some more responses... :gunhead:
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Welcome to this Great Site!

Pull up a chair and join on in!

Ride Safe, Ray


:waving:
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You might want to try undoing the gas cap temporarily, maybe vacuum is keeping the gas from flowing? I had to drill a tiny hole in mine (some were able to let the cap sit in seafoam and then blow it out).

Any other details would help a lot, like did this just start happening? Does it run great otherwise? How long have you been riding this bike?

Oh -- Welcome from Maine also!
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CAREYS1 wrote:
I have a 1986 GL 1200 that will just sop running at highway speeds. when I pull over it will restart but might back fire now and then before it restarts. any help out there
I got a call from a friend of mine last night with the same issue. His will start good and after about 2-3 miles it will shut off. He tells me he can let it sit for a minuet or two, starts up and it runs fine. He tells me that if he stops somewhere for a while and the bike cools off, it will do the same thing again. He does get some backfiring also.



Will be watching this post to see if I can figure his issues out also.
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I'm voting for pulse generators....mine did the same thing, only when hot. It usually needed about 10 minutes to cool down before it would re-start and run fine. Easy fix, $72.53 from hdlparts.com, part #18
http://www.hdlparts.com/fiche_secti...ry=MOTORCYCLES&make=HONDA&year=1986&fveh=3448
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the bike runs great other wise .I did not have any trouble with it last year. I have a newer bike this year so I don't ridethe 86much. I have had it out twice this year and it has done it both times. i did check the 30amp main fuse and it had some corrosion or white powder looking stuff behind it when i pulled out the the screws. also the 3 yellow wires from the stator by the plug are discolored would any of this do it.
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I don't believe the wires are an engine stopping issue, but the dis-coloration is the sign of increased resistance/heat from a poor connection. Time to cut-out the connector and hard-wire. The 30amp dog-bone fuse having the oxidation,(powder), around it could be another matter.



It wouldn't hurt to replace it with an auto-motive bladestyle fuse and water-proof holder. Most auto parts stores have them for $5-$7.00 They're also much easier to find when on the road.



Do you loose all electrical power,(30amp fuse), or just the engine... :gunhead:
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Shooter wrote:
Welcome to the Forum. The pulse generator coils located behind the timing belt cover are fairly notorious for killing an engine when hot. But don't generally allow a restart until cooled off for 20/30 minutes.



You can download a manual for your Wing from the Ref/FAQ section to further help in your trouble-shooting. It sure sounds like ignition problems. But you may also want to chech-out the fuel delivery system.



Check back, as your sure to get some more responses... :gunhead:


I agree with Shooter. I remember the GL1200 LTD's were notorious for having the pulse generator problems. I noticed you have an Interstate but it still could be the problem.
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Thanks Shooter for the info,
I just loose the engine. It just did it again today I was just getting on it from a stop and I lost power and the engine stop. I have All the lights on the dashoil,Neutral. I kept rolling with the clutch in and shifted to Neutral and it the starter it back fired a few times then started and i rode back home like nothing was wrong. Idid fix the 3 yellow wires and the 30 amp fuse.
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Welcome to the forum Careys1,

Is the backfire in the airbox, or exhaust? Does the bikebog down before it dies, or does it just die?

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Dennis , thank you
it is from the Exhaust. the bike just dies.
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How's the condition of the wire connections at the Kill switch, or the contacts of the switch itself ? Time to start digging. Ignition switch, chaffed wire... :gunhead:
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Sounds electrical. The backfire is probably unburned fuel pushed into the exhaust by the enging still turning with no spark.

Check the big connector above the solenoid for burnt or loose connections. Usually if this connector is the problem you will also loose the presets on the radio and clock.

Another guess would be a loose wire or plug around the coils. That's where the pulse generators connect. Those connections don't usually fix themselves though. So I'm betting on that plug above the solenoid.
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Thanks guys,
Iam at work now and will start diging into it as soon as I get home. I will report back to everyone soon. this is a great site I will pass it on to everyone I ride with.
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Just would like to thank everyone out there. This is a great place to go for help.I unpluged and cleaned all connectors and plugs up.took the bike out for a short test drive and then ended up going on 100 mile "test ride." Bike ran great.
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