Question about 1981 Suzuki GS 750 L

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81 Suzuki gs650 #2 carb floods gas out after start

I have an 81 Suzuki gs650. I can get the bike running then it starts flooding gas out of the #2 carb. I can keep bike running, kind of, by working throttle but it just continues to leak gas out and runs super rich with white smoke out the tailpipes. If I let off throttle more gas comes out and it quickly dies. Please help. I have taken tank off and fuel valve out and cleaned screen and make no diffrence. Thank you.

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The float is stuck open in the leaking carb. Remove the float bowl and clean the carb after removing the pin holding the float in place. While the float is out, shake it to see if gas has gotten inside it. If so, you will need a new float or will need to drain the float then re-solder it to seal it up again. To drain the float chances are you will need to drill a vent hole in it to allow the gas to drain. Just solder the vent closed when done.

Posted on Jul 14, 2010

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Posted on Jan 02, 2017

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Hi,my name is Darrell and I have a 81 gs 750 l.when i got the bike #2 cyl was flooding out big time.found that the #2 carb had a vac line to the peecock and was pulling gas through it so we blocked it...


you will need to fix the fuel tap and try again.
The vac line opperates the vacumn tap, so the fuel shouldnt flow unless there is vacumn. either you are running it on prime or the tap is jammed open and can cause flooding in all the carbs.
You may also need a new air cleaner element

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I've got a 2005 650 that is pouring gas out of a tube under the carb. It only pours when its started and running. Won't idle


Your carb has a hung float or needle and seat issues.

You have to take the carb off the bike and consider replacing the float and/or needle and seat.

You might get by just raising the float level. But this is only a stopgap maneuver. Buy a new float!

You bike is flooding so it wont run right until this is fixed.

The reason its only flooding while its running is because your bike has an automatic gas tank valve that opens when the bike starts and makes vacuum that opens the valve. It is saving you from the bike totally filling up with fuel!

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Are the cabies flooding or runing out of fuel? pull the choke on dose it help if it does low fuel.

Drain the bowls and see if there is plenty of fuel.....If its flooding turn the fuel off or block it when the engine starts to drop clys if it starts to pick up after 10secs or so the carbies are flooding

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