BMW R1100S 2004. After stopping the engine I hear bubbling fuel in the tank Why? Thank you.

SOURCE: 2004 BMW R1150RT Fuel Filter.

NO, must remove the tank.

SOURCE: I HAVE AN BMW 2001 R1100S MODEL,WITH INTEGRAL

Make sure the battery is in good working order , low voltage can trigger the ABS warning light. It needs 14.2 volts steady

SOURCE: BMW R1150 GS 2004 engine

Do you have spark? take out one plug,hold it against the engine with a non-conductive tool and crank the bike.If you have spark spray some gas into both chambers through the spark plug holes tighten them up and see if the bike will bark.If it does you have a fuel delivery problem,either the fuel pump will not bring the pressure up enough or the injectors are plugged (did you buy some gas somewhere out on a ride you don't normally stop at),or the ECM isn't telling the injectors to pulse. Go for the simplist thing first and that would be the fuel punp,this you can do yourself although you must know but now(like all us beamer owners) BMW stands for Break My Wallet.Nothing will be cheap so you just might want to take it in and have them do a diagnostic for you,and replace the parts yourself. This way they can make sure the ECM is 100% and narrow it down for you.I teach auto and this is what I had to do.Best of luck to you and let me know how you make out.