2002 gsx 250 carb breather leaking

[DrDarkMatter]

hi, I just discovered today that one of my carb breathers is leaking fuel, the other one is fine but one is leaking fuel on to the ground.

any ideas on what might cause this?

just started happening today.

TIA

[FJRider]

Carb breather or Carb overflow ... ???

Probably sticking float level valve.

[DrDarkMatter]

Carb breather or Car overflow ... ???

Probably sticking float level valve.


ya carb overflow, thank you.

ok so need to pull the carbs I guess give it a good clean?

[FJRider]

ya carb overflow, thank you.

ok so need to pull the carbs I guess give it a good clean?

Fix 1. Tap on the carb bowel lightly with a screwdriver or similar, and see if fuel stops

Fix 2. Turn the fuel off (if it has no vacuum valve) and drain the carb. then a quick flush. (suck on the vacuum hose if it has one)

Fix 3. Pull the bowel off and see what is making it stick.

Check your manual for correct float level settings and check all bowels are set correctly.

[FJRider]

ya carb overflow, thank you.

ok so need to pull the carbs I guess give it a good clean?

If your bike fuel system is vacuum operated ... and fuel is leaking when the engine is not running ... it would be most likely the vacuum valve at the tank. (not unusual) Leaking from one bowel is because it take the easiest (lowest) way out.

[DrDarkMatter]

If your bike fuel system is vacuum operated ... and fuel is leaking when the engine is not running ... it would be most likely the vacuum valve at the tank. (not unusual) Leaking from one bowel is because it take the easiest (lowest) way out.


thank you mate

[DrDarkMatter]

um question please, maybe coincidentally or not the choke is not working very well either recently, its not really doing anything in the morning when I start the bike, it seems to be just dumping in fuel but the revs are not going up as I would expect and I need to do it manually with the throttle.

think these are connected?

[FJRider]

thank you mate

But a float valve will still be allowing fuel to pass it.

The tank may need cleaned out ... if both issued are involved.

And look at fitting an inline fuel filter to stop this issue in the future. They are not expensive.

[DrDarkMatter]

looks like the petcock is poked,

[FJRider]

looks like the petcock is poked, its allowing fuel to flow in all positions when it should only allow it to flow on ON and PRI when vacuum is applied

If one or both carbs are overfull ... it is probably flooding on starting. Thus no noticeable change would be heard. And it would run like a dog ...

Sort the petcock out and go from there. It's not a great idea to "fix" it yourself. (if it even CAN be)

Usually you just end up with it in small pieces that wont go back together again. New removes the problem for quite some time.

[DrDarkMatter]

. New removes the problem for quite some time.

thats the plan stan, thanks for your input it was very helpful

[DrDarkMatter]

finally got it replaced after a long wait for it from Japan, got it installed last night, rides like a new bike.