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Old 10-11-2005, 08:04 PM   #1
Roadwarrior OP
Taking The Long Way
 
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Joined: Apr 2002
Location: Great White North
Oddometer: 1,002
Fuel Leaking problems

I've got fuel leaking from My 1978 GS550. The fuel seems to be comming from the overflow hose running to the airbox. At first I suspected a stuck float, but when I left a can under the bike over the weekend I was left with quite a bit of fuel that had spilled, and it seemed to still be dripping. Shouldn't the petcock have cut off the flow of fuel so that only what was in the bowls could leak out? Why is gas getting in the airbox and then leaking out? It seems to be running way too well to have a stuck float.

Any opinions out there?
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Old 10-12-2005, 09:47 AM   #2
SOLO LOBO
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vaccum petcock?


If no (or even yes) I'd bet the rubber insert in the petcock is worn out and fuel is bypassing that to the carbs.
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Old 10-12-2005, 10:14 AM   #3
Rustic
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Quote:
Originally Posted by SOLO LOBO
vaccum petcock?
+1

The rubber diaphragm in the petcock probably has a hole or tear in it. I'd recommend either replacing the petcock or rebuilding it.
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Old 10-14-2005, 09:06 PM   #4
Roadwarrior OP
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Looks like it may be the diaphram after all. I could not get a rebuild kit for it, and the dealer showed the petcock as discontinued. I ordered a new one from Bikebandit.
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