2009 BMW R 1200 RT Engine Problems

TECHNICIAN FOUND THAT THE ENGINE DOES NOT RESPOND TO THROTTLE INPUTS. DISCOVERED LEFT AND RIGHT THROTTLE BODY REQUIRE REPLACEMENT DUE TO CABLE CAMS ARE BROKEN. BOUGHT THIS BIKE FOR PARTS. CHOSE TO FIX IT UP GIVEN LOW MILEAGE. LOOKS LIKE PLASTIC CAM FRACTURES FREQUENTLY. LUCKY I FOUND OUT BEFORE I TRIED RIDING IT. NEWER MODELS BY MANUFACTURER AND AFTERMARKET PARTS OFFER METAL CAM. EVEN MY KIDS CAR SEATS NEED TO BE REPLACED AFTER 10 YEARS BECAUSE OF “PLASTICS FATIGUE/FAILURE”.

THE THROTTLE BODIES ON THIS MOTORCYCLE ARE CABLE-ACTUATED, WITH PLASTIC PULLEYS MOLDED ONTO THE THROTTLE SPINDLES. THESE PLASTIC PULLEYS WERE SEVERELY CRACKED AND I HAVE REPLACED THEM (I STILL HAVE THE OLD PARTS). I'M AWARE OF NUMEROUS BMW MOTORCYCLES OF THIS VINTAGE THAT HAVE DEVELOPED CRACKS IN THE THROTTLE PULLEYS. I DISCOVERED MY PROBLEM VIA INSPECTION IN MY GARAGE, BUT I'M CURRENTLY AWARE OF TWO OTHER OWNERS FOR WHOM THE PULLEYS DETACHED FROM THE SPINDLES WHILE RIDING, CAUSING A SUDDEN LOSS OF ENGINE POWER. THIS PROBLEM HAS ALSO MANIFESTED ON OTHER BMW MOTORCYCLES THAT USE THE SAME ENGINE (E.G. THE R1200GS).