Overflow fuel leaking
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Cruiser
Joined: Mar 2005
Posts: 185
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From:
Overflow fuel leaking
Hi
I just swapped out my cv carb on my 1992 Electra Glide for a re-built. I took the tank off to make it easier. I put everything back on and started the engine. I got evertthing running good but now when I shut the engine off the carb overflow line will start leaking fuel.
I thought the carb was bad so I put the old one back on but it now leaks too.
It only seems to leak when the engine is off. If I turn off the fuel valve it stops as well. I know I have everything on correctly.
Any ideas!!! Help!!!
Mark
I just swapped out my cv carb on my 1992 Electra Glide for a re-built. I took the tank off to make it easier. I put everything back on and started the engine. I got evertthing running good but now when I shut the engine off the carb overflow line will start leaking fuel.
I thought the carb was bad so I put the old one back on but it now leaks too.
It only seems to leak when the engine is off. If I turn off the fuel valve it stops as well. I know I have everything on correctly.
Any ideas!!! Help!!!
Mark
Seasoned HDF Member
Joined: Jan 2005
Posts: 21,949
Likes: 6
From: My house
RE: Overflow fuel leaking
ORIGINAL: mchaous
You would think it would be something like that but the original carb didn't leak before. So why now?
You would think it would be something like that but the original carb didn't leak before. So why now?
Thread Starter
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Cruiser
Joined: Mar 2005
Posts: 185
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From:
RE: Overflow fuel leaking
Yes, I understand...
I was changing the original carb out because it made the bike cough and spit. In general it ran ruff. I had no problems with leaking or anything.
The new re-built carb I purchased from someone that re-builds and improves carbs. He was surprised to here his carb was leaking. He is going to send me a replacement. But it surprised me to find the old carb leaking too, once I had put it back on.
I wonder if I could be fouling them up because there is something in the lines?
Also It amazed me that the overflow tube just sits as a feed line hanging down the back of the engine. As much fuel as I get coming out it would worry me that it could catch on fire if the engine got hot enough and the fuel got to close!
The only other thing I can see in the manual is the tank venting. The book says it can cause this problem if the venting is stopped up. But everything else points to the float and shut off valve.
So if no body has any other ideas I guess I will have to wait for the new carb or turn off the fuel line after stopping.
It just seems dangerous to me.....
Anyone else have any thoughts....
I was changing the original carb out because it made the bike cough and spit. In general it ran ruff. I had no problems with leaking or anything.
The new re-built carb I purchased from someone that re-builds and improves carbs. He was surprised to here his carb was leaking. He is going to send me a replacement. But it surprised me to find the old carb leaking too, once I had put it back on.
I wonder if I could be fouling them up because there is something in the lines?
Also It amazed me that the overflow tube just sits as a feed line hanging down the back of the engine. As much fuel as I get coming out it would worry me that it could catch on fire if the engine got hot enough and the fuel got to close!
The only other thing I can see in the manual is the tank venting. The book says it can cause this problem if the venting is stopped up. But everything else points to the float and shut off valve.
So if no body has any other ideas I guess I will have to wait for the new carb or turn off the fuel line after stopping.
It just seems dangerous to me.....
Anyone else have any thoughts....
Seasoned HDF Member
Joined: Dec 2004
Posts: 11,068
Likes: 1,477
From: Texas! Ya mean there's someplace else?
RE: Overflow fuel leaking
Since you have the manual why not pull the bowl off and check the float setting, valve, and seat? Isn't that difficult to do.
I've had this problem due to a float valve that had a rubber tip. Some types of gas caused the tip to deteriorate rapidly and mess things up. Had a problem one time with the inside of the fuel line flaking little ***** of rubber that would get between the valve and seat. Once after I rebuilt a carb the valve got cocked when I reassemblrd the bowl to the body. I didn't see it and of course it poured fuel all over. Another time the valve was made wrong and didn't fit properly into the seat. I've never had a vent problem, but it would be worth checking. Usually if the vent is plugged the bike will only run for a few minutes, or even less.
If the carb is overflowing the bike'll probably run rich. It might get bad enough to flood the motor and foul the plugs.
I've had this problem due to a float valve that had a rubber tip. Some types of gas caused the tip to deteriorate rapidly and mess things up. Had a problem one time with the inside of the fuel line flaking little ***** of rubber that would get between the valve and seat. Once after I rebuilt a carb the valve got cocked when I reassemblrd the bowl to the body. I didn't see it and of course it poured fuel all over. Another time the valve was made wrong and didn't fit properly into the seat. I've never had a vent problem, but it would be worth checking. Usually if the vent is plugged the bike will only run for a few minutes, or even less.
If the carb is overflowing the bike'll probably run rich. It might get bad enough to flood the motor and foul the plugs.
Seasoned HDF Member
Joined: Jan 2005
Posts: 21,949
Likes: 6
From: My house
RE: Overflow fuel leaking
ORIGINAL: pococj
Since you have the manual why not pull the bowl off and check the float setting, valve, and seat? Isn't that difficult to do.
I've had this problem due to a float valve that had a rubber tip. Some types of gas caused the tip to deteriorate rapidly and mess things up. Had a problem one time with the inside of the fuel line flaking little ***** of rubber that would get between the valve and seat. Once after I rebuilt a carb the valve got cocked when I reassemblrd the bowl to the body. I didn't see it and of course it poured fuel all over. Another time the valve was made wrong and didn't fit properly into the seat. I've never had a vent problem, but it would be worth checking. Usually if the vent is plugged the bike will only run for a few minutes, or even less.
If the carb is overflowing the bike'll probably run rich. It might get bad enough to flood the motor and foul the plugs.
Since you have the manual why not pull the bowl off and check the float setting, valve, and seat? Isn't that difficult to do.
I've had this problem due to a float valve that had a rubber tip. Some types of gas caused the tip to deteriorate rapidly and mess things up. Had a problem one time with the inside of the fuel line flaking little ***** of rubber that would get between the valve and seat. Once after I rebuilt a carb the valve got cocked when I reassemblrd the bowl to the body. I didn't see it and of course it poured fuel all over. Another time the valve was made wrong and didn't fit properly into the seat. I've never had a vent problem, but it would be worth checking. Usually if the vent is plugged the bike will only run for a few minutes, or even less.
If the carb is overflowing the bike'll probably run rich. It might get bad enough to flood the motor and foul the plugs.
Good luck and let us know how it comes out.
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Road Master
Joined: Feb 2005
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From:
RE: Overflow fuel leaking
You said that you took the tank off,Perhaps there is something there to look at
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Thread Starter
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Cruiser
Joined: Mar 2005
Posts: 185
Likes: 0
From:
RE: Overflow fuel leaking
Hay,
Does anyone put some kind of inline filter on there rides. As much as I have looked I can't find any real filtering between the tank and the carb. If so any reccomendations?
Once I get the carb of I will pull the bottom and have a look at the float and fuel valve. I will clean it out and try again. If that doesn't work, I will wait for the replacement carb and put it on. Just have to be stuck without a ride for a few days.
Yes I did take the tank off to better get at the carb and it's linkage. Stupid me cause I did replace all the hoses with new ones. I can see some of them cracking now with the new clamps I have replaced. I will do that today when I pull the carb back off. This bike I purchased last month. While it is in very good cond for 1992, the previous owners didn't take as good a care of it as they should. I am continuely cleaning 29,000 miles of road grime from inside the bike. If I had been the original owner I would have kept this bike in better order. It's a nice bike and deserves better.
Thanks All....Will keep in touch with you on this....
Does anyone put some kind of inline filter on there rides. As much as I have looked I can't find any real filtering between the tank and the carb. If so any reccomendations?
Once I get the carb of I will pull the bottom and have a look at the float and fuel valve. I will clean it out and try again. If that doesn't work, I will wait for the replacement carb and put it on. Just have to be stuck without a ride for a few days.
Yes I did take the tank off to better get at the carb and it's linkage. Stupid me cause I did replace all the hoses with new ones. I can see some of them cracking now with the new clamps I have replaced. I will do that today when I pull the carb back off. This bike I purchased last month. While it is in very good cond for 1992, the previous owners didn't take as good a care of it as they should. I am continuely cleaning 29,000 miles of road grime from inside the bike. If I had been the original owner I would have kept this bike in better order. It's a nice bike and deserves better.
Thanks All....Will keep in touch with you on this....
Grand HDF Member
Joined: Dec 2004
Posts: 4,513
Likes: 4
From: Midland, TX
RE: Overflow fuel leaking
When you took the tank off, did you have to drain it or were you able to shut off the fuel supply with the fuel valve? If you didn't have to drain the tank, I believe I would drain the tank and remove the fuel valve. There is normally a filter in the fuel valve (up inside the tank) and it could contain some trash. That could have been part of the problem with the original carb. While the tank is drained and the fuel valve is off, flush it.
Like Skip said, there's not much that can cause the overflow line to put out gas other than stuck float or needle valve. Sorry, I'm no motorhead like some of the guys here but I'd look at the tank before going any further.
Like Skip said, there's not much that can cause the overflow line to put out gas other than stuck float or needle valve. Sorry, I'm no motorhead like some of the guys here but I'd look at the tank before going any further.