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Discussion Starter #1
Went for a ride Saturday then parked the bike on the centre stand as usual. Got up early Sunday morning to catch a flight (well, several really) to Taipei. When I arrived I received a cellphone message from my wife at home saying that the floor under the bike is covered in fuel……..

Seems that the whole tank (her words) has drained onto the floor ?????? She says it is (was?) dripping from the right side of the bike inside the fairing at about one drop every second.

Any ideas what I’m going to find when I get home next weekend ?

Where do I start looking ? I have no idea on this one…. It’s a 2003 model that had it’s first major service (20,000 klm) 2 months ago.
 

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K12LT03 said:
o rings on the quick disconnects i would imagine,(not uncommon) or the gasket at the fuel pump.
Or broken plastic disconnect. That has happened a few times also.

Grif located some (rather expensive) metal disconnects for his.
 

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Discussion Starter #4
K12LT03 said:
o rings on the quick disconnects i would imagine,(not uncommon) or the gasket at the fuel pump.
Thanks Guys,

So how far do I have to dig to find the quick disconnects and the fuel pump? Does the tank have to come off? or can I get to them by just removing the right side tupperware?
 

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Daza said:
Thanks Guys,

So how far do I have to dig to find the quick disconnects and the fuel pump? Does the tank have to come off? or can I get to them by just removing the right side tupperware?
Just remove the right side panel. The quick disconnects are just above the tip over wing, behind the main right fairing. Pretty easy to get to.
 

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Discussion Starter #6
Thanks David, so much good info comes from you guys.....
 

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(Lots of fuel) on the floor...

About four months after I purchased my 05 LT, it started leaking fuel down the right side. The cause was the factory not having cleaned all the machined thermoplastic shavings from the interior of the tank. The shavings got trapped between the flange of the gas tank and the flat gasket which seals against the black plastic cap and bottom of the tank/fuel assembly.

I was able to remove the right fairing, disconnect the two quick disconnects, drain any residual fuel from the tank, and remove the black plastic cap by placing the flat of a large screwdriver against one of the exterior lugs on the cap and rapping it so to cause rotation of the cap. Once the cap is removed and the two lines from the fuel assembly at the cap, the flat gasket can be removed and a new one slid into place without removing the tank. Naturally, the local dealer wanted to have the LT towed to their facility but I picked up the new gasket (no charge) and did the work myself.

When it comes time to replace the fuel filter, I will remove the tank and flush it out in view of the above problem. Good luck with your troubleshooting/fix.

Terry
 

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Discussion Starter #10
Fuel on the floor update...

simoncharles said:
I understand that the plastic cap nut should be tightened twice as much as previously recommended.

Simon
Guys,
Returned to Aus this morning and removed the right hand side tupperware this afternoon to find the fuel had leaked from the the fuel pump gasket. I was able to remove the cap nut easily with my hand, should I be able to do that?

I'll get a new gasket Monday, but how tight should the big nut be? Do I just tighten it by hand? And I assume I should replace to disconnect O rings at the same time?

Thanks in advance for your help.
 

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Daz, you should definately NOT be able to remove it by hand. BMW makes a special tool to do this, but I've never used it ( or seen it for that matter). Get everything aligned and then use a rubber strap wrench to put some real torque on it. The official numbers are in the thread that Simon posted, but as you can see, even BMW is a little ambivalent on how tight it should be. I tightened mine as much as I could with the strap wrench and have never had a problem.

Best of luck!
 

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I just use a large pair of channel locks to snug it down well. There is no way you should be able to remove the cap by hand. Be sure to clean the gasket and all surfaces of crud. I also put a thin coat of oil on gaskets when I install them to avoid binding and tears. YMMV
 
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