Gas leak when starting


Information and questions on GL1200 Goldwings (1984-1987)
  • Sponsored Links
mfharris
Posts: 3
Joined: Wed Feb 24, 2010 3:55 pm
Location: Wolcott, NY
Motorcycle: 1986 GL1200A

Gas leak when starting

Postby mfharris » Thu Jun 17, 2010 10:40 am



I have an 86 GL1200A. When I start it, it almost seems to seize up, and when it does turn over again, gas leaks from somewhere. Turning off the fuel shut off and turning it over a few times seems to help. Any ideas what this could be? :?:



raycw
Posts: 127
Joined: Wed May 19, 2010 11:02 pm
Location: Jackson, CA
Motorcycle: 88 GL1500

Re: Gas leak when starting

Postby raycw » Thu Jun 17, 2010 12:23 pm

From your description it sure sounds like a sticking float valve... especially with the 'seizing up' and 'turning off the fuel valve' comments.

User avatar
WA9FWT
Posts: 828
Joined: Thu Oct 22, 2009 12:19 pm
Location: sheboygan WI U.S. A.
Motorcycle: 1982 GL1100A Aspencade Now a Trike
1975 Cb750K sold

Re: Gas leak when starting

Postby WA9FWT » Thu Jun 17, 2010 12:35 pm

mfharris wrote:I have an 86 GL1200A. When I start it, it almost seems to seize up, and when it does turn over again, gas leaks from somewhere. Turning off the fuel shut off and turning it over a few times seems to help. Any ideas what this could be? :?:

Run a few tanks of Sea-foam through and see if that helps. When was the last time the fuel filter was changed.Always a good practice when the bike is parked to shut that fuel off, thats why it's there!!

Phil WA9FWT

rrmiller73
Posts: 42
Joined: Tue Nov 10, 2009 12:16 pm
Location: Mt. Juliet, TN
Motorcycle: 1984 GL1200 Aspencade

Re: Gas leak when starting

Postby rrmiller73 » Thu Jun 17, 2010 10:51 pm

Sounds like fuel leaking through a carb into a cylinder after the engine is shut down. Then when you crank the engine you get a "Liquid lock" on a cylinder. The piston can't compress liquid gas. That can bend/break connecting rods if enough fuel is in there and another cylinder fires. It will also leak on through the engine and mix gas into the oil in the sump. Mine was doing that. Replaced the carb needles and seats to fix. Not sure what the external leak would be. The fuel would go out the exhaust valve into the exhaust if it cranked the piston over center and went back down on the power stroke and started back up.




Return to “GL1200 Information & Questions”




Who is online

Users browsing this forum: No registered users and 2 guests