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Old 08-30-2008, 05:56 AM   #1
CaribouCases OP
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R100GS Fuel Line Replacement

I recently picked up a nice '94 R100GS, it needs a little love. My fuel lines are old and leaky (the ones on the bike smart guy). Is it possible to fish out the one that goes under the air box without having to take the air box out?

I searched topic to no avail.
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Old 08-30-2008, 06:17 AM   #2
phactory
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If you are going to replace the fuel line with the 7mm cloth braided fuel line that BMW sells, you will have to at least loosen the airbox to slide the fuel line through the opening. There are 2 bolts that attch it to the top rail of the tranny and one that attaches it to the top of the tranny. Not that big of a deal really.

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Quote:
Originally Posted by CaribouCases
I recently picked up a nice '94 R100GS, it needs a little love. My fuel lines are old and leaky (the ones on the bike smart guy). Is it possible to fish out the one that goes under the air box without having to take the air box out?

I searched topic to no avail.
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Old 08-30-2008, 06:26 AM   #3
dfc
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Bing sells some nice urethane stuff, thats what I used.

YMMV

http://www.bingcarburetor.com/
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Old 08-30-2008, 08:38 AM   #4
CaribouCases OP
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Thanks. I got the old one out and there was no way the new one was going back in without loosening up the airbox. Basically had to take the left carb partially off to get all the air/emissions parts out of the way to access those 3 bolts holding the box to the tranny. Would have been nice if there was a tube in there to slide the crossover fuel line in and out .
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Please see the beginning of the Pelican-Based Luggage Thread in the Vendor Forum .
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Old 08-30-2008, 09:17 AM   #5
jackd
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I Had No Problem.

I changed my fuel lines without loosening my airbox on my R100GS. I purchased my fuel line from MAX BMW (standard fuel line - not the fabric covered variety) and fed it into the cross-over space under the airbox. MAX coils the line when they ship it, so the line has a tendency to not travel straight and therefore snag on the gearbox structure. I just fed in a straight welding rod from the other side of the box and used the end of the welding rod to guide the hose end through the tight opening. Done in minutes - no bolts or carbs removed. Jackd
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Old 08-30-2008, 12:28 PM   #6
datchew
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you CAN fish out and "twist" through the braided stuff without loosening a single bolt. It's a pain, but it can be done.

Bing's special fuel line recently change. Not the same wonderful stuff they used to have.

Spare yourself the money and pain and just go buy 1/4" ID black urethane fuel line from Dennis Kirk or the like. Cheap, better, easy.
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Old 08-30-2008, 01:45 PM   #7
jtwind
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Sorry to hear that the bing line has changed, I liked the old stuff. Lots of folks I know of use a cloth covered line you can buy from VW parts suppliers. Like the BMW stuff but less expensive.

You can get the cloth line through there without removing stuff. I usually put a thin wooden dowel through it and that helps/
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Old 11-19-2012, 04:38 AM   #8
Hi Viz Guy
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R100 GS Fuel Line Diameter

What is the fuel line diameter for the R100 GS?
Getting ready to order up some new fuel lines and filters...
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