carb leaking all over the place!!! - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
Carbs and Fuel System
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post #1 of 10 (permalink) Old 11-15-2008, 10:38 AM Thread Starter
 
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carb leaking all over the place!!!

heres my deal everybody, working on a 750 for a friend. bike wouldn't start, traced to bad magnetic switch in starter circuit got part in yesterday put about a gallon of gas in tank after sitting for a couple of months i got it started and it ran all right for aminute or two i rolled it off the kickstand and it died. but as i looked down my right side carb was pouring out fuel like it just drank an 18 pack. float sticking? i' m afraid to turn it over now because of the chance of the cylinder full of gas ie; big boom!!! i pulled the lines of the carb and drained what was in the bowl any suggestions on what to do next??? thanks loads!glette24
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post #2 of 10 (permalink) Old 11-15-2008, 10:49 AM
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Drain the carbs. Pull the fuel lines from the petcock. Fill the fuel lines and float bowls with seafoam. Let it sit for a while. Reconnect the fuel lines set to Prime with float drain open. Be sure to catch the fuel in a container of some kind. Shut off the fuel. Clean everything that got wet with the fuel and let it dry. Pull the plugs & set the kill switch to off. Cover the plug holes with some rags and turn it over to blow out any gas. Smell your oil. If there is any gas smell change it. Now put the plugs back. Set the kill switch to run and try again to start normally.

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post #3 of 10 (permalink) Old 11-15-2008, 11:01 AM
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antiq pretty much covered it. I double stress checking your oil. Gas in there will kill an engine, quick.

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post #4 of 10 (permalink) Old 11-15-2008, 11:13 AM
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Quote:
Originally Posted by antiq View Post
.... set to Prime with float drain open.
If it's the earlier model, with a Prime selection.
What year is the bike?

EDIT:
I see the bike is a '92 and probably doesn't have Prime.


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Last edited by hyperbuzzin; 11-15-2008 at 11:22 AM.
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post #5 of 10 (permalink) Old 11-15-2008, 12:25 PM
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Quote:
Originally Posted by antiq View Post
Drain the carbs. Pull the fuel lines from the petcock. Fill the fuel lines and float bowls with seafoam. Let it sit for a while. Reconnect the fuel lines set to Prime with float drain open. Be sure to catch the fuel in a container of some kind. Shut off the fuel. Clean everything that got wet with the fuel and let it dry. Pull the plugs & set the kill switch to off. Cover the plug holes with some rags and turn it over to blow out any gas. Smell your oil. If there is any gas smell change it. Now put the plugs back. Set the kill switch to run and try again to start normally.
Very good and quick!!!
Tap carbs with wrench to loosen floats.

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post #6 of 10 (permalink) Old 11-15-2008, 04:32 PM
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Some bikes won't crank over with the on/off switch in the off position, keep an eye on the hanging spark plugs wires if if this is the case with yours so they don't throw a spark into puddled gas....
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post #7 of 10 (permalink) Old 11-15-2008, 11:32 PM
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Quote:
Originally Posted by 750Doug View Post
Some bikes won't crank over with the on/off switch in the off position, keep an eye on the hanging spark plugs wires if if this is the case with yours so they don't throw a spark into puddled gas....
If you feel a fuel ignition could be possible you can remove the +lead from your coils, SAFETY FIRST!


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post #8 of 10 (permalink) Old 11-16-2008, 12:03 AM
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Yep. Or wrap rags on them. Or sandwich bags. Tie them up. Curve them back in away from the plug holes. Could slide empty spark plug boxes over them. Fab a nifty holder from a block of wood. Rubber hose over the end. Stick a Q-Tip in the end. Stick a pencil in the end. Bubble gum. Cotton. Leave them and don't sweat it. Be aware that it's possible.
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post #9 of 10 (permalink) Old 11-17-2008, 11:19 AM Thread Starter
 
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ok everybody thanks for the info i did everything you said and drained the oil and put in fresh. I also pulled the tank and went through the petcock it had some serious funk growing in it to looked like rusty sand put it back together and it did the same thing so now i'm going to pull the carbs and see if i can get them unstuck with whatever is growing in them . thanks for everybodys help. glette24
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post #10 of 10 (permalink) Old 11-18-2008, 07:13 PM
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Before you pull the carbs, since the bike has sat for a long period of time, there is a gasket that fits the bottom of the carb bowls that may have shrunk to the point of uselessness. My rear carb had this problem and a new rubber gasket and a 7mm wrench allowed me to take the cover off, replace the gasket, and button her back up again without the pain of pulling the carbs. If the gas is leaking from the bottom of the carb bowl, this may be your problem.

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