Gas leaking from muffler clamp that connects to exhaust.

[james250ninja]

Hi there I just cleaned my carbs today pilot jets main jets,all the vacum hoses on carbs the peacock.
And everything.
I put everything back to normal.When I start the bike and give gas ..there's gas coming from where the mufflers connect to the exhaust on left side only.
No leaks from hoses or anything.just from bottom where the muffler meets the exhaust.
Any ideas on what happen this is first time I've seen this.

[Triple Jim]

Am I correct that you mean exhaust gas, not gasoline?

[james250ninja]

Gasoline dripping, I wipe it with a rag it wet and smells of gas..
What the difference what could be wrong.

[Triple Jim]

My first suspicion would be that gasoline is dripping there from something above it, not coming through the engine. Unless you're running one just the other cylinder, there's about no way liquid gasoline could get there through the exhaust port.

If you are running on one cylinder, you can easily tell because one head pipe will be hot and the other will not. In that case, I suppose you could find fuel coming out the joint.

[james250ninja]

Ok if it running on one cylinder, what the next thing I should do

[MylittleNinjette]

If a carb float valve is stuck open, it could dribble gas into the carb, into the cylinder, and out the exhaust.

How is your oil level, rising?

If it isn't coming from some hose, I'd pull the carbs and re-check. That is the only thing you worked on, right?

Cheers,
Mike

[Triple Jim]

Originally Posted by james250ninja

Ok if it running on one cylinder, what the next thing I should do

Let's take things one step at a time... is it running on one cylinder?

As far as MylittleNinjette's idea, that's why I asked the question about a cold head pipe... if a float valve stuck open, that could flood the engine, make that cylinder not fire, make fuel come out the exhaust. So let us know if it's running on one cylinder and we'll go from there.

[james250ninja]

Yes the pipe is cold

[james250ninja]

That all I did was clean the carbs, I pulled spark plug out of left side to check it it looked good.

How do I check the float valve

[jkv45]

Originally Posted by james250ninja

Yes the pipe is cold

I would check that you have spark on that cylinder by pulling the plug and grounding the electrode while cranking.

If you have spark, it's going to be a fuel problem. Either way too much or none at all. If the plug is wet there's too much. If it's dry there's no fuel. Chances are the carb needs to be removed and checked.

Because you are getting raw fuel from the exhaust I'm thinking that will be your next move.

[Triple Jim]

Originally Posted by james250ninja

That all I did was clean the carbs, I pulled spark plug out of left side to check it it looked good.

How do I check the float valve

If this started right after you cleaned the carbs, there's a good chance the problem is carb related. I agree that a float valve that's stuck open is a likely cause. If you take off the float bowl, you should be able to see whether or not the float moves freely, and if the needle moves into its seat. Sometimes the end of the needle gets stuck on the finger that pushes on it and things don't move smoothly, especially if a dent is worn on the finger.

And sometimes they get jammed a little on the first filling of the bowl, and a little jiggling or a whack with the handle of a screwdriver cures the problem.

If you end up with the bowl off, you can put a hose on the carb inlet and blow in it, and you should hear air stop flowing when you gently lift the float.

[james250ninja]

Ok I'll check on that tomarow, also I notice when I put the choke on full the idle stays the same and does not increase. You think that also related to stuck float valve.

I change my plugs today. There were a little wet with gas but not soaking wet.

[Motofool]

Originally Posted by james250ninja

.........
I change my plugs today. There were a little wet with gas but not soaking wet.

Checking the spark first, as advised above, is simpler than removing the carbs again.

Because you removed the tank, verify that all the contacts of both spark coils are solidly connected.

[james250ninja]

Hi there I cleaned carbs again,but when I took the float bowl off on left side my pilot jet was aalready out ,i guess I didn't tighten it. Well I cleaned evrything again tighten all my main jets and pilot jet.
Pit it together. Start up good no gas leak from anywhere.

Only thing is trying to find the right idle. I took it for a drive but it seems to die when low idle that all it pick up great and everything.,,just the idle need ssome work.

[jkv45]

The carbs need to be synced and idle mixture screws set to 2.5 turns out as a base with the idle speed adjusted to 1300 after the optimum idle mixture settings are determined.

This section has all the info - http://faq.ninja250.org/wiki/Intake

[Triple Jim]

I'm glad you found the problem. If something is wrong shortly after you work on something, suspect the thing you worked on.