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because of too much fuel for the air at low rpms, but livable at higher rpms. This is not as likely as a vacuum leak, but IS possible. You can test with a gauge Teed into the return hose between the rear of the fuel rail and the fuel pressure regulator with the bike running. Should be about 38psi +/-.


5. Fuel Hose return hose between the Fuel Pressure Regulator and the tank must be the factory pre-molded hose, otherwise it will kink when the tank is moved for- ward into position. Hose from rear of fuel rail to fuel pressure regulator can be bulk injection rated hose.


6. Oetiker clamps: You can purchase Oetiker pliers online to crimp the BMW Oetiker clamps used on your throttle bodies. The old clamps need to be cut off. You need to use new clamps. They are a one-time use.”


I asked on the forum why the vacuum


hose from the fuel pressure regulator to the #3 throttle body is protected by a long spring and Lee responded: “The reason the vacuum line from the #3 throttle body to the fuel pressure regulator is in a spring is


so it won’t kink or collapse. This is just bulk vacuum hose.” Lee added, “Replace all three hoses to the


fuel pressure regulator at this time due to the fact that you’re already there and they’re such a pain to get to (remember, factory moulded hose from regulator to tank!) I would suggest that you do the full Euro- pean style of venting your fuel tank: Pur- chase “the cup,” or as BMW calls it: 16 13 2 307 467 Air Accumulator. This is a plastic cup that clips to the frame rail just below the two nipples on the right rear of your tank. Nothing attaches to the nipples, thereby making removal and replacement of the tank easier (Hoses attached to these nipples can kink during the last move of pushing the tank forward).” With a list of things to do to hopefully


solve my problem, I called Hopkins Hitch- ing Post, my nearest BMW dealer to order the parts. The manifolds were the most expensive parts at $55 each, but I was given a generous discount beyond the normal 10% MOA member discount they give. The parts would take about a week to arrive. To read Part Two of Ken Tuvman's story


documenting the completion of his work, please visit the Flying Brick K-bike forum at bmwmoa.org.


January 22 - March 18th, 2016 www.gsmmotorent.com


RIDE BIG BEND This Winter


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Left, Wiss clips used to cut Oetiker clamps. Below, Work completed and ready to ride.


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(850) 466-5324 February 2016 BMW OWNERS NEWS 49 www.bmwmotorcyclesofpensacola.com www.bmwmotorcyclesofpensacola.com


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