leaking gas tank


Information and questions on GL1200 Goldwings (1984-1987)
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bernyboy
Posts: 41
Joined: Sat May 16, 2015 10:43 am
Location: Cranbrook,British Columbia,Canada
Motorcycle: 1984 GL1200 Standard

leaking gas tank

Post by bernyboy »



I filled my tank (on a 1984 gl1200 standard) the other day for the first time this season, and soon realized there was a gas leak somewhere. This morning I started investigating, and found that the leak comes from the area where the mounting bracket is attached at the back end of the tank. I can see the gas seeping out at that point and wetting the tank. I presume I will have to remove the tank and (after all appropriate precautions) get it welded to fix the leak. The tank is in good condition otherwise.
I have looked at the removal process and, though it is a bit of a pain, I don't see any problems.
So I am asking you to weigh in if you have experience with this. Is welding the leak the right approach? Am I better off replacing the tank? Are there issues I should be aware of in the process? Thanks for any input.



froche
Posts: 275
Joined: Wed Mar 12, 2014 1:56 pm
Location: Vista, ca
Motorcycle: 1985 Goldwing Aspencade (GL1200A)
2002 GL1800

Former bikes;
2000 R1100RT
2005 Suzuki Bandit
1979 Yamaha XS1100
1978 Yamaha XS1100 Special
1990 Yamaha XV250
1980 Yamaha XV750
1979 Honda CB750
1968 Triumph Bonneville T120
1973 Honda CB450
1968 Harley Davidson Sportster
1974 Honda CB750
1968 Honda CL72

Re: leaking gas tank

Post by froche »

Before removing the tank and replacing i'd try to clean out the area and use a gas safe epoxy.

bernyboy
Posts: 41
Joined: Sat May 16, 2015 10:43 am
Location: Cranbrook,British Columbia,Canada
Motorcycle: 1984 GL1200 Standard

Re: leaking gas tank

Post by bernyboy »

Thanks, yeah, I am trying that. Certainly a lot less work if it will do the job.

bernyboy
Posts: 41
Joined: Sat May 16, 2015 10:43 am
Location: Cranbrook,British Columbia,Canada
Motorcycle: 1984 GL1200 Standard

Re: leaking gas tank

Post by bernyboy »

I siphoned the gas out so it was no longer seeping through the leak. I cleaned up the area around the mounting bracket where the leak was. I removed rear fender for better access. (That meant loosening off one shock to get the plastic fender part out of the way) I sanded about a 1/2" strip around the bracket down to bare metal, as well as sanding down the bracket itself. Cleaned it all up really well with brake cleaner and clean rag. Then I used Permatex Fuel Tank Repair - an epoxy stick. I used about 1/2 of the 28 gram stick - could have used a little less. After applying it and letting it cure I spray painted over the area to make sure there was no bare metal left. It is holding well at this time. Hopefully a long term repair.



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