Ricco1 Posted June 18, 2012 Share Posted June 18, 2012 I've recently noticed a smell of petrol when I've opened the garage where I store my bike. I've checked the underside of the tank and the fuel line to the carb, seems OK. I've pinned it down to the breather/ overflow tube that comes off the bottom of the carb. An odd drip or 2 is coming from here.Is this an easy fix?It's a Suzuki GN125 bythe way.Thanks for any replies. Quote Link to comment Share on other sites More sharing options...
Weebl Posted June 18, 2012 Share Posted June 18, 2012 A line coming directly from the bottom of the carb float bowl is not an overflow, it is a drain line. There should be a screw right next to it to open and close it off. You may have to remove it, clean it and refit it if it is weeping.If the line is not off the float bowl but from further up, then your float height may be set wrong. Does it still do it if you turn off the fuel at the petrol tap from the tank? Quote Link to comment Share on other sites More sharing options...
MattB Posted June 18, 2012 Share Posted June 18, 2012 Does it still do it if you turn off the fuel at the petrol tap from the tank? Remembering of course that you should be turning the fuel tap (if you have one) off at the end of the day anyway... Quote Link to comment Share on other sites More sharing options...
davefly76 Posted June 18, 2012 Share Posted June 18, 2012 Does it still do it if you turn off the fuel at the petrol tap from the tank? Remembering of course that you should be turning the fuel tap (if you have one) off at the end of the day anyway... Really?? I've never turned mine off, apart from when I've removed the tank.. Quote Link to comment Share on other sites More sharing options...
Boothy Posted June 18, 2012 Share Posted June 18, 2012 I've left mine on all the time even when taking the tanks off never had any problems Quote Link to comment Share on other sites More sharing options...
alexanderfoti Posted June 18, 2012 Share Posted June 18, 2012 The reason to turn them off is that if the float height is stuck, and the bike is at an angle, the cylinder could fill with fuel, causing a hydrolock, and doing lots of damage the next time you start the engine. Quote Link to comment Share on other sites More sharing options...
mattycoops43 Posted June 18, 2012 Share Posted June 18, 2012 All depends on your fuel tap. A lot of modern bikes have a vacuum pipe like mine does, vacuum from engine turning opens the tap allowing fuel to exit. I HAVE no off, just reserve, prime and on. (Prime bypasses the vacuum on)I can take my tank off with the fuel pipe disconnected and the tap turned on and not a drop does exit from within! Quote Link to comment Share on other sites More sharing options...
pointblank0 Posted July 5, 2012 Share Posted July 5, 2012 A line coming directly from the bottom of the carb float bowl is not an overflow, it is a drain line. There should be a screw right next to it to open and close it off. You may have to remove it, clean it and refit it if it is weeping.If the line is not off the float bowl but from further up, then your float height may be set wrong. Does it still do it if you turn off the fuel at the petrol tap from the tank? The same thing happened to my wifes sr125. The o ring had deteriorated on the stop screw for the drain. Shut the fuel off, take the screw out (you will lose a little more fuel here) and check the state of the o rings and replace. Quote Link to comment Share on other sites More sharing options...
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