Engine Misfire


Information and questions on GL1100 Goldwings (1980-1983)
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davissev
Posts: 2
Joined: Thu May 19, 2011 7:48 pm
Location: Jacksonville, Florida
Motorcycle: 1981 gl1100

Engine Misfire

Postby davissev » Sat May 21, 2011 8:21 pm



I have a gl1100 ,1981 .Just got it from a guy,After I ride for about 20 miles engine start to loose power .It act like it running only on one or two clyinders.after it sit and cools off ,it run just fine again for about the same milieage.think it could be a coil?
Thank You ,joe



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virgilmobile
Posts: 7659
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: Engine Misfire

Postby virgilmobile » Sun May 22, 2011 12:05 pm

Could be.It can also be fuel starved,eg. Fuel cap not venting(vacuum building in the tank)fuel filter plugged,carb screens plugged,etc.One way to find out which on is to drive it around the 20 miles,when it STARTS to poop out,loosen the fuel cap.If it comes back,fix the cap.If it still dies out,shut the fuel lever off,open the drain plug on each carb and see if it still has fuel in each one.

DragonRider
Posts: 136
Joined: Thu May 19, 2011 11:11 am
Location: Ocala, FL
Motorcycle: 1982 and 1983 GL1100 Aspencades

Re: Engine Misfire

Postby DragonRider » Sun May 22, 2011 6:35 pm

I agree, start with simple things. I would change out all the plugs making sure they are all gapped correctly, and while at it look closely at the wires.
I do think that this problem will be fuel related.

davissev
Posts: 2
Joined: Thu May 19, 2011 7:48 pm
Location: Jacksonville, Florida
Motorcycle: 1981 gl1100

Re: Engine Misfire

Postby davissev » Sun May 22, 2011 7:07 pm

Thank you, I will try that amd let you know.

83gl1100nb
Posts: 14
Joined: Sat Feb 26, 2011 1:29 am
Location: Bothell, Wa.
Motorcycle: 83honda GL1100 Aspencade
95 Concours
82 Nighthawk

Re: Engine Misfire

Postby 83gl1100nb » Tue May 24, 2011 1:14 am

how do you maintain the gas cap? i haven't put mine on the road, but while running it, it builds up a strong vacuum in the tank. i thought that it was supposed to do that, but if not, would like to change that. thank you.
also, my biggest issue right now is a hard, knocking idle. at 2,000 rpm it smooths out & has a nice gw sound, but below that, it doesn't sound very good. i've cleaned the carbs & am running some seafoam thru it now. i'm not sure if the idle has anything to do with the battery, i am using the battery from my Kawasaki concours '93 & it is a little small & doesn't quite have the cranking amps. i tried synching the carbs, but the hard idle is still there. will try that again later. anyone else out there experience this? it seems close, like maybe the timing is off a little. i was thinking of checking the points. any thoughts would be appreciated. thanks

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WingAdmin
Site Admin
Posts: 17047
Joined: Fri Oct 03, 2008 4:16 pm
Location: Strongsville, OH
Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (wife's!)
1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: Engine Misfire

Postby WingAdmin » Thu May 26, 2011 3:38 pm

There will be some vacuum in the tank, but it shouldn't be a strong vacuum. If the gas cap is sealed up tight, the vacuum in the tank will build up until the fuel pump can't fight against it any more and the engine will stall. You'll this is the problem if unscrewing the gas cap instantly solves the problem.

To clean out the gas cap soak it in a solvent that won't harm the gasket (someone mentioned they soaked theirs in Seafoam and it worked well).

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virgilmobile
Posts: 7659
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: Engine Misfire

Postby virgilmobile » Thu May 26, 2011 3:56 pm

That annoying rattle.It has plagued all 4 of my Wings.I fixed that by properly cleaning,adjusting and syncing the carbs(the closer,the quieter the chain).Vacuum advance comes in with air flow(running the throttle up).It is checked at the tube going to the vacuum advance canister.
Also,NO points on the 1100.Electronic ignition.The pickup coils are on the back of the engine attached to the vacuum advance canister.
Get anal about the carbs.They must be clean,sealed up and vacuum synced to the nats-ass if you want it to idle right and pull smooth.Then worry about timing and the vacuum advance mechanism.




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