Fuel Leak??? - BMW Luxury Touring Community
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post #1 of 10 Old Dec 21st, 2015, 4:12 pm Thread Starter
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Fuel Leak???

After a day on my í99 I noticed my right boot smelled of gasoline. The next time I rode it I looked down and saw the toe was wet. Once it dried, it didnít get wet again. A few days later I started the bike in on the center stand and had fuel dripping on the ground. Iíve removed the plastic on the right side, turned on the ignition to pressurize the system nothing. Started the engine several times Ė still dry - no leaks. Nothing is damp. Iíve felt up around the tank and other connections, at least as far as I can reach, still canít find anything that even feels damp. .

The quick disconnect fittings look like the original plastic, but both male ends have bolt style clamps while the female ends have the OEM ear clamps so they may have been changed at some point.

Iíve got a set of chrome plated bras ones on order from Beemer Boneyard, but am stumped on the leak. When these things leak is it sometimes intermittent? Anything else I should look at while itís open?
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post #2 of 10 Old Dec 21st, 2015, 6:49 pm
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Re: Fuel Leak???

I had that just a few weeks ago I posted on here also I ended taking the tupper off checking it out turned the key on and move the connects around a little and one them started leaking Replaced both o-rings Everything is good
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Gary
2003 K1200LT
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post #3 of 10 Old Dec 21st, 2015, 7:27 pm
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Re: Fuel Leak???

You might also want to take a close look around the fuel pump. Make sure the large plastic nut is tight and nothing leaking from the bottom of the tank.

BTW; I don't think the 99 had quick connects, so those were added by someone.

John Baker

2005 BMW K1200LT
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post #4 of 10 Old Dec 21st, 2015, 8:16 pm
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Re: Fuel Leak???

If you have the plastic disconnects, one is leaking. Over time they just crack. That is what mine did. It took me forever to find the leak. I could not see it with the bike running with the panels off.

Mike Trevelino
Williamsburg, VA
2008 RT
2000 LT - Totaled at 99,960 miles


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post #5 of 10 Old Dec 22nd, 2015, 5:20 am
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Re: Fuel Leak???

+ 1 On the quick fuel disconnects and checking the fuel pump under right panal.

2004 K1200LT. Big Mama
1999 Suzuki Intruder VL1500LC. Betty Lou.
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post #6 of 10 Old Dec 22nd, 2015, 7:52 am
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Re: Fuel Leak???

On a trip in 2011 I had similar symptoms would only leak when bike was running. Was getting worse so checked into it around Gardiner Montana, couldn't see anything when the bike wasn't running but when running right in the middle of the one fuel line there was a bulged rubber bubble with a pinhole in the center spraying fuel. There are no shops of any sort in Gardiner so I wrapped it with electrical tape and put 2 hose clamps over it, been that way ever since, I keep thinking I really should replace that hose.


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post #7 of 10 Old Dec 22nd, 2015, 11:02 am
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Re: Fuel Leak???

It seems common for LTs, the fuel quick disconnect may fail after some time. The good thing is that it leaks only when the fuel pump is on. It should stop when the key is "Off" - no fuel puddle in the garage.
You can get those plastic connectors at your local dealer, or get a "better" metal one somewhere else.
Replacing it is fairly easy.

BJ

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post #8 of 10 Old Dec 22nd, 2015, 11:18 am
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Re: Fuel Leak???

See this posts:
http://www.bmwlt.com/forums/k1200lt/...fuel-leak.html
Go to my post number 31 where you will see that the coupling had split.

Mike Trevelino
Williamsburg, VA
2008 RT
2000 LT - Totaled at 99,960 miles


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post #9 of 10 Old Dec 22nd, 2015, 12:54 pm Thread Starter
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Re: Fuel Leak???

Quote:
Originally Posted by johnbaker15 View Post
You might also want to take a close look around the fuel pump. Make sure the large plastic nut is tight and nothing leaking from the bottom of the tank.

BTW; I don't think the 99 had quick connects, so those were added by someone.
-----------------------------
Yep, put on my glasses and looked closer. No quick disconnects, just plastic connectors. Hadn't looked at them before so wasn't sure what they should look like. Odd tho, parts catalogs I've seen show them for the '99.

I've got the upper fairings off both sides now. The big nut is tight. I've put some more gas in the tank. Still can't see anything damp or smell any gas. Maybe it's my imagination.

If it dries up in the next day or two, I'm going to take it around the block with the plastic off.
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post #10 of 10 Old Dec 22nd, 2015, 2:44 pm
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Re: Fuel Leak???

Start it on the center stand & wiggle the two lines where they are connected.

Dave Selvig
2004 Black LT
2000 Canon Red LT



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