FIRED right up!


Information and questions on GL1100 Goldwings (1980-1983)
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bigdirty1985
Posts: 13
Joined: Wed Jul 13, 2016 7:05 pm
Location: 38620
Motorcycle: 1980 gl1100, 1982 cb700 nighthawk

FIRED right up!

Postby bigdirty1985 » Sat Jul 16, 2016 8:03 pm



Ok well my 1980 gl 1100 had a bad spark unit so i replaced it today and then it fired right up but the problem is it really fired up lol apparently i have fuel leaking somewhere..... anyway i had a milk jug full of water out in my shop and doused it real quick so there was no damage done. but ive had these freaking carbs off four times and im just curious if there could be an easier way to check for and repair leaks. also it seems to me that when i look down into the breather that there is fuel spitting upwards into the intake area.is this normal? or could it be a valve issue?. after the first cleaning i had a few small leaks so when i took them off a second time i leak tested them with distilled water(a little unorthodox i know. but im a strange guy)before i put them back on. i didnt see any leaks before the fire but obviously there is one somewhere. any suggestions?



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Maz
Posts: 236
Joined: Tue May 19, 2015 4:43 am
Location: Kent, UK
Motorcycle: 1975 GL1000K1
1976 CB500T
1979 CB750L
1990 Yamaha FJ1200

Re: FIRED right up!

Postby Maz » Sun Jul 17, 2016 4:32 am

There shouldn't be fuel spurting anywhere apart from into the cylinders!
I would suggest you have a leaking O ring or plenum seal. The carbs will have to be stripped to replace. It would be well worth buying Randakks rebuild kit , with all new ethanol-proof O rings and seals. I did mine recently and can't recommend it enough.
Maz
Nostalgia is not what it used to be!

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Overdog
Posts: 173
Joined: Sat Oct 12, 2013 7:00 am
Location: Pittsburgh, Pennsylvania
Motorcycle: 83 Goldwing Interstate

74 BMW R90/6

Re: FIRED right up!

Postby Overdog » Sun Jul 17, 2016 5:21 am

Another place that a leak can occur is the accelerator pump....either the o-ring between the float bowl and carb body or the diaphragm itself. Get a flashlight and look above the accelerator pump on carb #3. If the diaphragm is bad, gas will squirt upward around the shaft of the pump. (You will have to give the throttle a quick twist to check for a leak there.)

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Maz
Posts: 236
Joined: Tue May 19, 2015 4:43 am
Location: Kent, UK
Motorcycle: 1975 GL1000K1
1976 CB500T
1979 CB750L
1990 Yamaha FJ1200

Re: FIRED right up!

Postby Maz » Sun Jul 17, 2016 5:39 am

Overdog wrote:Another place that a leak can occur is the accelerator pump....either the o-ring between the float bowl and carb body or the diaphragm itself. Get a flashlight and look above the accelerator pump on carb #3. If the diaphragm is bad, gas will squirt upward around the shaft of the pump. (You will have to give the throttle a quick twist to check for a leak there.)

+1 on that. Mine is a UK GL1000 , so I don't have the accelerator pump. If the spurting fuel that you can see in the intake only appears when twisting the throttle, then it's probably the normal action of the pump that you can see.
Maz
Nostalgia is not what it used to be!

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virgilmobile
Posts: 7660
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: FIRED right up!

Postby virgilmobile » Sun Jul 17, 2016 11:12 am

I never put carbs back on the bike without a full bench test.
A raised can of fuel 4 feet above the carb will provide the needed 2 psi of pressure to test for leaks.

bigdirty1985
Posts: 13
Joined: Wed Jul 13, 2016 7:05 pm
Location: 38620
Motorcycle: 1980 gl1100, 1982 cb700 nighthawk

Re: FIRED right up!

Postby bigdirty1985 » Sun Jul 17, 2016 6:48 pm

well looks to be coming from between 1 and 3 but im going out of town this week so it will have to wait. elevated reservoir is agreat idea btw .




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