1200 GL Interstate Carb leak & possible single carb conversion


Information and questions on GL1200 Goldwings (1984-1987)
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Ken Hall
Posts: 8
Joined: Mon May 23, 2016 11:20 am
Location: Muncie, Indiana
Motorcycle: 1986 GL 1200 Interstate

1200 GL Interstate Carb leak & possible single carb conversion

Postby Ken Hall » Tue Jun 21, 2016 10:10 am



I am a new owner of a 86 1200 I, the bike has just over 30,000 original miles. I have searched in vail for the past 6 weeks for someone to find my fuel leak and isolate it and fix it. I have not been successful, everyone wants to charge huge amounts or they simply refuse to work on it. Rather than sell the bike I am looking at working on it myself. I'm a bit cautious. While doing research I came across videos of people doing single carb conversions as a solution for leaks. But I don't know anything solid about these. Does anyone have an opinion? Would someone mind giving me advice. I sold my 650 Yamaha to go to college 20 years ago (worst mistake ever) and finally have a bike, and I have a leak coming from somewhere in the back of the carbs on the right side.



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twocams
Posts: 554
Joined: Tue Sep 29, 2015 11:25 am
Location: Grants Pass, Oregon
Motorcycle: 1985 GL1200 Aspencade, 2003 K1200GT BMW, 1969 R69S BMW
Sold : 84 V65 Magna, 82 Moto Guzzi, XS 1100 Yamaha,84 Wing Int., 80 650 Special, Only new bike 82 XV750 Virago (Guam),Honda 250,84 R100RT BMW,87 K100 LT BMW,93 K1100 LT BMW, 91 535 Virago, Honda 50

Re: 1200 GL Interstate Carb leak & possible single carb conversion

Postby twocams » Tue Jun 21, 2016 11:28 am

If you know how to use basic hand tools and a book . I would get a carbs rebuild kit take them out as an assembly and rebuild them. Much cheaper than going single carb. And you know what you have when done.
and of course you can do it your way. Any leaks on the back side.....they will have to be removed to fix. Most shops the young guys only know fuel injection. Its like point in a car or bike, what that? We, only work on electronic ignition. :roll:

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Ken Hall
Posts: 8
Joined: Mon May 23, 2016 11:20 am
Location: Muncie, Indiana
Motorcycle: 1986 GL 1200 Interstate

Re: 1200 GL Interstate Carb leak & possible single carb conversion

Postby Ken Hall » Tue Jun 21, 2016 2:32 pm

I haven't worked on motorcycles much. Cars, vans, tractors, atv's. Am I going to get in over my head? What about synchronization of the carbs when I'm done?

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twocams
Posts: 554
Joined: Tue Sep 29, 2015 11:25 am
Location: Grants Pass, Oregon
Motorcycle: 1985 GL1200 Aspencade, 2003 K1200GT BMW, 1969 R69S BMW
Sold : 84 V65 Magna, 82 Moto Guzzi, XS 1100 Yamaha,84 Wing Int., 80 650 Special, Only new bike 82 XV750 Virago (Guam),Honda 250,84 R100RT BMW,87 K100 LT BMW,93 K1100 LT BMW, 91 535 Virago, Honda 50

Re: 1200 GL Interstate Carb leak & possible single carb conversion

Postby twocams » Tue Jun 21, 2016 6:08 pm

Yes you should synchronize when done. A buddy,craig's list to borrow or pay them to use, buy a set if your going to keep the bike. I wouldnt start without a book. The hard part is getting those SOBs off.

User avatar
twocams
Posts: 554
Joined: Tue Sep 29, 2015 11:25 am
Location: Grants Pass, Oregon
Motorcycle: 1985 GL1200 Aspencade, 2003 K1200GT BMW, 1969 R69S BMW
Sold : 84 V65 Magna, 82 Moto Guzzi, XS 1100 Yamaha,84 Wing Int., 80 650 Special, Only new bike 82 XV750 Virago (Guam),Honda 250,84 R100RT BMW,87 K100 LT BMW,93 K1100 LT BMW, 91 535 Virago, Honda 50

Re: 1200 GL Interstate Carb leak & possible single carb conversion

Postby twocams » Tue Jun 21, 2016 6:13 pm

Randakks cycle has a nice kit for $115. + other kits. Or shop around some. Most people use his kits. For the GL.

Ken Hall
Posts: 8
Joined: Mon May 23, 2016 11:20 am
Location: Muncie, Indiana
Motorcycle: 1986 GL 1200 Interstate

Re: 1200 GL Interstate Carb leak & possible single carb conversion

Postby Ken Hall » Wed Jun 22, 2016 5:45 pm

In order to work on it do I need to remove the fairing and gas tank?

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twocams
Posts: 554
Joined: Tue Sep 29, 2015 11:25 am
Location: Grants Pass, Oregon
Motorcycle: 1985 GL1200 Aspencade, 2003 K1200GT BMW, 1969 R69S BMW
Sold : 84 V65 Magna, 82 Moto Guzzi, XS 1100 Yamaha,84 Wing Int., 80 650 Special, Only new bike 82 XV750 Virago (Guam),Honda 250,84 R100RT BMW,87 K100 LT BMW,93 K1100 LT BMW, 91 535 Virago, Honda 50

Re: 1200 GL Interstate Carb leak & possible single carb conversion

Postby twocams » Wed Jun 22, 2016 6:45 pm

No just the seat, fairing lowers over spark plugs.

Ken Hall
Posts: 8
Joined: Mon May 23, 2016 11:20 am
Location: Muncie, Indiana
Motorcycle: 1986 GL 1200 Interstate

Re: 1200 GL Interstate Carb leak & possible single carb conversion

Postby Ken Hall » Fri Jun 24, 2016 1:57 pm

Ok, so I have the seat off, lower 1/3 of the fairing on the right side (drivers right) an the left side off. I have also taken the exhaust manifolds off of both the #1and #2 carb. I have taken pictures as well as labeled everything. How do I can see how to get the carbs off, I was told I need to separate them but how....

User avatar
twocams
Posts: 554
Joined: Tue Sep 29, 2015 11:25 am
Location: Grants Pass, Oregon
Motorcycle: 1985 GL1200 Aspencade, 2003 K1200GT BMW, 1969 R69S BMW
Sold : 84 V65 Magna, 82 Moto Guzzi, XS 1100 Yamaha,84 Wing Int., 80 650 Special, Only new bike 82 XV750 Virago (Guam),Honda 250,84 R100RT BMW,87 K100 LT BMW,93 K1100 LT BMW, 91 535 Virago, Honda 50

Re: 1200 GL Interstate Carb leak & possible single carb conversion

Postby twocams » Fri Jun 24, 2016 2:46 pm

GET A BOOK!! After you get the air cleaner and black plastic stiff out of the way, inside false tank. No exhaust parts need to come off. Just intake. All 4 carbs together come out the left side of the bike. You need to unhook the choke cable, both accelerator cables, gas line from filter. then you and separate the carbs from each other.


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Ken Hall
Posts: 8
Joined: Mon May 23, 2016 11:20 am
Location: Muncie, Indiana
Motorcycle: 1986 GL 1200 Interstate

Re: 1200 GL Interstate Carb leak & possible single carb conversion

Postby Ken Hall » Mon Jun 27, 2016 10:47 am

I have the carbs off, what does the fuel cross over line look like between the two carb. Is it possible for that to have a leak? I cant get the carbs separated from the chamber, the screw is frozen. I just sprayed it down with carb cleaner and I'm going to try to get it off again in a little bit. But I am not sure if I need to or not...

User avatar
twocams
Posts: 554
Joined: Tue Sep 29, 2015 11:25 am
Location: Grants Pass, Oregon
Motorcycle: 1985 GL1200 Aspencade, 2003 K1200GT BMW, 1969 R69S BMW
Sold : 84 V65 Magna, 82 Moto Guzzi, XS 1100 Yamaha,84 Wing Int., 80 650 Special, Only new bike 82 XV750 Virago (Guam),Honda 250,84 R100RT BMW,87 K100 LT BMW,93 K1100 LT BMW, 91 535 Virago, Honda 50

Re: 1200 GL Interstate Carb leak & possible single carb conversion

Postby twocams » Mon Jun 27, 2016 2:04 pm

Each of those plastic "T" fittings that go between and connect the carbs has an o ring on each end. And the ones that had a gas line connected to them can leak. Anything on there that has o rings can leak. :shock:

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