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Registered
Join Date: Jan 2010
Location: Houston, Texas
Posts: 289
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Gurgling in Gas Tank
I was doing a throttle body sync on '04 R1100S. I know you should run a fan when doing this in front of the bike for air movement/cooling but it was a relatively cool day (about 60 degree in garage) and did not do.
Not sure of the number of minutes but ran bike on center stand for a good 5-10 minutes, smell fueled and when I opened tank cap, heard gurgling. Heard similar noise on an old '69 Stingray with Quadrajet as that noise was coming from fuel bowl as the gas was vaporizing as a result of no carb spacer between carb and cast iron intake and as a result, carb getting too hot. The gas tank on the R1100S, even had a poof of vapor come out of fuel inlet like a nasty fart. The tank really was warm but not like an oven. Bike started and ran fine but the gurgling was strange. Checked Internet and one post said it would be a bad fuel line inside of tank that was allowing air to come out into the fuel. Made sense. Little baffling since all of us have been stuck in traffic in 100 degree days for over ten minutes and I never have noticed to gurgling but never popped the tank open either. Also, it is not like cylinder heads are right up against tank like on a Harley or inline 4 capturing heat. Gas tank gurgled for a good 30 minutes after finishing the carb sync and then noice quit. That was Saturday. On Sunday, took bike out for 20-25 miles and were was fine. Has anyone experience gas tank gurgling and what did you think it was? |
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03-23-2015, 11:00 AM
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Broken/loose fuel line inside. Fuel line to/from fuel pump might be the issue.
I had it happen off and on with a duc I used to race. Finally gave out on the track when I pinned it. In the pits with the tank open I could hear the gurgling. Drain, pop off the fuel pump and check the lines. On a side note. I've not been playing with my R1100S much yet but on my R1150RTP I did the fuel filter mod so I wouldn't have to take off the tank on the filter changes. Made it way easier.
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www.Prairie-Dog-Racing.com SOAR #238 - 2004 R1100S BCR (#185) Partnered with: EK Chain, JT Sprockets, Elka Suspensions, Leo Vince, Spiegler performance parts |
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03-23-2015, 11:25 AM
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unsafe at any speed
Join Date: Dec 2003
Location: Arkansas
Posts: 12,347
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They all do it… I have had mine do it many times after riding it hard. Park it get off and it gurgles for a bit.
Edit:Re read your post... it gurgled for 30 minutes? How hot did you have the thing?
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Bill Swartzwelder 2002 R1100S Prep/ 2024 Tenere 700 Last edited by wswartzwel; 03-23-2015 at 01:12 PM.. |
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03-23-2015, 12:57 PM
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Registered
Join Date: May 2005
Location: Fort Mill s.c.
Posts: 2,631
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Does your bike have the evap. Canister? If so, if it gets clogged funny things can happen. Happen to me on a RT that I owned for a short period.
Lane
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2005 Boxercup, 2013 R1200GS Rallye, 2011 Triumph 675 Daytona, Honda MB5, 2011 KTM300xc, 1975 Bultaco, 1992 Beta, 1972 Aermacchi |
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03-23-2015, 03:30 PM
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