Coolant leak


Information and questions on GL1500 Goldwings (1988-2000)
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Fireball
Posts: 17
Joined: Fri Jun 06, 2014 10:15 am
Location: Fairmont WV
Motorcycle: 1994 GL1500 SE

Coolant leak

Postby Fireball » Fri Jun 06, 2014 10:28 am



Hi all! Hope I'm posting in the correct section. My 94 GL 1500 has a very small coolant leak below the water pump. I dont belive it is leaking from the weep hole on the pump, looks to be leaking around a bolt going vertical into pump at the bottom.Any ideas?The bike has around 57,000 miles on her

Thanks
Mike



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WingAdmin
Site Admin
Posts: 17050
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: Coolant leak

Postby WingAdmin » Fri Jun 06, 2014 3:59 pm

That bolt is the drain plug:

Image

Image

It's possible that it is loose, or that the copper washer that seals it is worn and has been used too many times. It's also possible that it IS leaking from the weep hole, and is simply dripping down to the bolt, which is the lowest point.

Take a paper towel and dry the whole area very well. Then dust some talcum powder around the bottom of the pump. Let it sit for a day, or until you see coolant again. You will be able to see very clearly if the coolant is coming from anywhere other than around the bolt.

Fireball
Posts: 17
Joined: Fri Jun 06, 2014 10:15 am
Location: Fairmont WV
Motorcycle: 1994 GL1500 SE

Re: Coolant leak

Postby Fireball » Mon Jun 09, 2014 9:26 am

Didn't know that was the drain. Good call on the talcum powder. It was coming from the lower radiator hose at the pump. Snugged it up and looks to have stopped. Will run it a bit and check. It happens again and the hose will be replaced.

Just found the how-to section....

Again
Thanks

Mike

User avatar
WingAdmin
Site Admin
Posts: 17050
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: Coolant leak

Postby WingAdmin » Mon Jun 09, 2014 9:40 am

Fireball wrote:Didn't know that was the drain. Good call on the talcum powder. It was coming from the lower radiator hose at the pump. Snugged it up and looks to have stopped. Will run it a bit and check. It happens again and the hose will be replaced.

Just found the how-to section....

Again
Thanks


I find that those OEM hose clamps (wire spring) will eventually cause the hoses start to leak - they simply don't hold enough pressure after years of heat cycling. I found that exact same leak on my bike last year, in the same place. I replaced the clamp (and the others) with a quality stainless steel band clamp, and that fixed the leak.

wingsailor
Posts: 17
Joined: Mon Dec 06, 2010 3:03 pm
Location: Manson, NC
Motorcycle: 1984 GL1200A
1988 GL1500
2005 GL1800

Re: Coolant leak

Postby wingsailor » Mon Jun 09, 2014 11:50 am

A quick tip for re-freshing that copper seal. Place it on a non-combustable surface and heat it with a propane torch till it turns cherry red. Allow it to cool on it's own. All done! (Softens the copper to allow it to seal again.




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