Fuel leak question


Information and questions on GL1500 Goldwings (1988-2000)
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T_birdman
Posts: 145
Joined: Wed May 12, 2010 7:53 pm
Location: Arcadia, CA
Motorcycle: 1975 GL1000 (gave to a friend)
1981 GL1100I (Blew up engine @ 231K Mi./ My fault)
1985 GL1200A (Burned)
1999 GL1500A (Burned)
1993 GL1500A (Red Recently in Accident))

Fuel leak question

Post by T_birdman » Sat Jul 06, 2019 3:17 pm



I'm posting this separate from my regular repair posting of my 93 1500 because I'm looking for a deciding choice to make. Most of you know my 93 1500 and I were involved in a collision in April of this year, and I'm in the process of repairing cracked and broken plastics. I found my TruGel battery was damaged in the accident and swapped it out with a good lead acid I had on hand. I was checking the operation of the LED instrument panel upgrades and decided to start up the bike to check the alternator for proper working order while I had it running. The bike started right up, choked it a bit to where it ran smoothly and put my battery/ charging system checker on and the voltage was right at 14.2 volts, happy me! But after about 3 minutes I smelled gas, I thought it might be the petcock in need of repair but found no leaks near it. I walked around the bike while it was still running and saw a small puddle of gas directly under the timing belt cover on the left side and saw the leak coming from the cover itself! I shut the bike down and saw it still leaking small drops at a time, but after the bike had been off for several minutes the leak stopped. My best guess would be that a float in one of the carbs on the left side is stuck open filling the carb bowl and overflowing. The last time I had to pull the carb assembly out of one of my wings was on my 81 1100.

I'm wondering if anyone has seen this before and if they know of a quick fix, like for example tapping on the carb bowls to free up the float or is that not feasible? If the verdict is to pull it out and work on the whole assembly, I'm going to have to shelve the entire bike project till after my new garage is built rather than fart around in the sun and heat of the summer. Too much going on around here, especially with the ground shaking and construction about to start.



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AZgl1800
Posts: 1848
Joined: Thu Oct 30, 2008 2:46 pm
Location: Lake Oologah Indian Territory USA
Motorcycle: '02 GL1800

Re: Fuel leak question

Post by AZgl1800 » Sat Jul 06, 2019 3:48 pm

I'm thinking the left carb float is hanging up, as the bike has sat for a while.

run some Seafoam through it full can in the gas it has now.

start it outside the shop/garage and let it idle for an hour or more.
make sure the fans cycle on/off.

I had to do that with a '98 that I bought that sat too long.

I repeated the long idling process for several days before it cleared up.
~John
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User avatar
T_birdman
Posts: 145
Joined: Wed May 12, 2010 7:53 pm
Location: Arcadia, CA
Motorcycle: 1975 GL1000 (gave to a friend)
1981 GL1100I (Blew up engine @ 231K Mi./ My fault)
1985 GL1200A (Burned)
1999 GL1500A (Burned)
1993 GL1500A (Red Recently in Accident))

Re: Fuel leak question

Post by T_birdman » Sat Jul 06, 2019 4:48 pm

AZgl1800 wrote:
Sat Jul 06, 2019 3:48 pm
I'm thinking the left carb float is hanging up, as the bike has sat for a while.

run some Seafoam through it full can in the gas it has now.

start it outside the shop/garage and let it idle for an hour or more.
make sure the fans cycle on/off.

I had to do that with a '98 that I bought that sat too long.

I repeated the long idling process for several days before it cleared up.
Excellent idea! Going to run to Auto zone for a can right now! With the heat we have here now I'll run it through a bit after the sun goes down this evening, thanks AZgl1800, you rock!

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DenverWinger
Posts: 1090
Joined: Thu Jun 23, 2011 2:20 pm
Location: Denver, CO
Motorcycle: (s)
1980 GL1100 STD Vetter (2005-)
1993 GL1500 Aspencade (2017-)
1983 Trav-Lite Camper (2010-)
Past rides
1972 CL350 (1980-1988) sold
1978 Suzuki GS550 (1985-2005) sold
1977 GL1000 (2002-2006) sold

Re: Fuel leak question

Post by DenverWinger » Sat Jul 06, 2019 5:44 pm

Might also try this:

Disconnect vacuum line from fuel petcock and run the carbs out of gas. Add choke when it starts sputtering to burn as much gas out of the carbs as you can. This drops the floats to bottom. Reconnect vacuum and start it back up. With floats at bottom inrush of fuel may flush out the needle valves.....
♫ 99 Little Bugs in the Code, ♪
♪ 99 Bugs in the Code. ♫ :(
♫ Take one down, Patch it around, ♪
♫ 127 Little Bugs in the Code. ♫ ♪ :shock:

~Mark

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AZgl1800
Posts: 1848
Joined: Thu Oct 30, 2008 2:46 pm
Location: Lake Oologah Indian Territory USA
Motorcycle: '02 GL1800

Re: Fuel leak question

Post by AZgl1800 » Sat Jul 06, 2019 9:52 pm

DenverWinger wrote:
Sat Jul 06, 2019 5:44 pm
Might also try this:

Disconnect vacuum line from fuel petcock and run the carbs out of gas. Add choke when it starts sputtering to burn as much gas out of the carbs as you can. This drops the floats to bottom. Reconnect vacuum and start it back up. With floats at bottom inrush of fuel may flush out the needle valves.....
now that is a very good thought.
~John
What is the Forum Index?
http://bit.ly/2GnjbzV

Download it here:
http://bit.ly/2SLDNqF

User avatar
T_birdman
Posts: 145
Joined: Wed May 12, 2010 7:53 pm
Location: Arcadia, CA
Motorcycle: 1975 GL1000 (gave to a friend)
1981 GL1100I (Blew up engine @ 231K Mi./ My fault)
1985 GL1200A (Burned)
1999 GL1500A (Burned)
1993 GL1500A (Red Recently in Accident))

Re: Fuel leak question

Post by T_birdman » Sat Jul 06, 2019 11:01 pm

DenverWinger wrote:
Sat Jul 06, 2019 5:44 pm
Might also try this:

Disconnect vacuum line from fuel petcock and run the carbs out of gas. Add choke when it starts sputtering to burn as much gas out of the carbs as you can. This drops the floats to bottom. Reconnect vacuum and start it back up. With floats at bottom inrush of fuel may flush out the needle valves.....
DenverWinger and AZgl1800, I combined both of your suggestions by putting in the Seafoam first, started the bike up and ran it for about 15 minutes, but I also inserted a long 3/8ths ratchet extention and set the end alongside the carbs on the left side and tapped the extention a few times to try to help free the float up. At about just past straight up on the temp gauge the fans on both sides kicked in. Saw no gas leaking. Then I pulled the vacuum hose and ran the carbs dry, shut off the bike, let it cool down for about a half hour and started it back up, let it run again till the fans kicked in again and still no gas leak!

You guys are great members and represent this forum very well! I'll make it a regular run to check for leaks down the road before it takes to the highway again, but truly appreciate the great help!

User avatar
DenverWinger
Posts: 1090
Joined: Thu Jun 23, 2011 2:20 pm
Location: Denver, CO
Motorcycle: (s)
1980 GL1100 STD Vetter (2005-)
1993 GL1500 Aspencade (2017-)
1983 Trav-Lite Camper (2010-)
Past rides
1972 CL350 (1980-1988) sold
1978 Suzuki GS550 (1985-2005) sold
1977 GL1000 (2002-2006) sold

Re: Fuel leak question

Post by DenverWinger » Sun Jul 07, 2019 6:25 am

Glad She's running pretty again! :D (I have a "soft spot" for Red 93 Aspy's)

You ought to be pretty close to "Back on the road", been following the repair thread. I liked your solution for blanking off the CB Radio hole!

So what's left? Saddlebag and Paint? See ya on the repair thread....


♫ 99 Little Bugs in the Code, ♪
♪ 99 Bugs in the Code. ♫ :(
♫ Take one down, Patch it around, ♪
♫ 127 Little Bugs in the Code. ♫ ♪ :shock:

~Mark

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