Fuel Guage Problems - BMW Luxury Touring Community
 
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post #1 of 7 Old Sep 18th, 2011, 4:43 pm Thread Starter
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Fuel Guage Problems

I have an '03 LT with fuel guage problems..It never has gone all the way to full, it seemed to stop at about 7/8 of a tank but now it only registers 3/4 after a fill up. I just got back off a short ride of 33 miles and the guage was on empty when I got back..Either I have a problem with the sending unit/fuel guage or I'm only getting about 6 miles per gallon..Has anyone else had this problem and if so where do I go first? Guage or sending unit?
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post #2 of 7 Old Sep 18th, 2011, 5:15 pm
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Re: Fuel Guage Problems

it can be a bent filler tube and sounds like it here is a link

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post #3 of 7 Old Sep 18th, 2011, 7:41 pm
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Wink Re: Fuel Guage Problems

You are putting it on the side-stand for fueling, correct? If not, that could be your problem.

Just thinking.

John

John & Marilyn Fisher
'00 K1200LTC "Katie"
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Hillsboro, Oregon

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post #4 of 7 Old Sep 18th, 2011, 7:50 pm
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Re: Fuel Guage Problems

I had the same problem last year after reinstalling the fuel tank.
My wife and I went for a ride, and I pointed at the gage and said......
" Damn ! I just filled, and the gage only says Half Full !"
.......She said, "thats the engine temperature".
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post #5 of 7 Old Sep 18th, 2011, 11:14 pm
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Re: Fuel Guage Problems

Quote:
Originally Posted by rhawk
I had the same problem last year after reinstalling the fuel tank.
My wife and I went for a ride, and I pointed at the gage and said......
" Damn ! I just filled, and the gage only says Half Full !"
.......She said, "thats the engine temperature".
That's funny . Now this thread will likely get moved to the humor section.
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post #6 of 7 Old Sep 19th, 2011, 7:16 am
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Re: Fuel Guage Problems

Quote:
Originally Posted by rhawk
I had the same problem last year after reinstalling the fuel tank.
My wife and I went for a ride, and I pointed at the gage and said......
" Damn ! I just filled, and the gage only says Half Full !"
.......She said, "thats the engine temperature".
Well, when the temperature goes up and before the fans kick in, you will have a full tank

Bill
Eastern Virginia (Middle Peninsula)
K3ZXV
05 Honda Sabre 1100
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California Sidecar Friendship II
99 K1200LT, Basalt Gray "DELILAH" (SOLD)
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post #7 of 7 Old Sep 19th, 2011, 8:39 am
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Re: Fuel Guage Problems

I had the partially collapsed fuel probe "syndrome" from a clogged charcoal canister that blocked the tank vent on my '99 I just bought. There's a bit of info here on the issue. The fix was a canister-ectomy.... as has been described often in the archives, and then pull the probe and repair it. It's an aluminum tube with an internal float and some wires on a "frame". When the tank doesn't vent properly from a plugged charcoal caniser, a partial vacuum in the gas tank causes the aluminum fuel level tube to partially collapse restricting the float movement.

I'm betting you have a version of this situation.....your fuel level tube is pinched near the top, and as your bike runs, fuel is drawn out of the probe to near the bottom due to plugged venting giving a near empty indication. Fixing the probe isn't too hard if you're a bit handy with ad hoc kind of repairs.

A simple test to see if something like the above is happening is to ride your bike for a while, stop, turn of the engine, and take off the gas cap. If there's an audible hiss....your tank isn't venting properly.

Good luck!

Jeff Dunkle
Ocala, FL
2000 LT - Motorvation Formula II
1995 R100GS
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