blacque jacque shellacque
Member
Hi,
Last summer my 2002, R1150RS developed an issue when starting off from a stop. At low rpms, the engine will cough and sputter, and almost stall as if its not getting enough fuel. Pulling in the clutch and blipping or holding the throttle open for a few seconds resolves the issue. What makes it curious is that it only occurs at certain temperatures. For example, on the first start of the day, when the engine is cold, there is no problem. If I stop for fuel, and I restart shortly afterwards while the engine is still hot, there is no problem. On the other hand, if I were to take a 15 minute break during the fuel stop, the problem will definitely pop up. In fact anytime the RID temperature display is between 1 to 4 bars upon restart, it happens. Once underway, even under heavy load, there is never a hiccup or misfire. Having to stop and at a traffic light, no issue getting underway again. The bike has always run smoothly, it never has had any surging issue. Mileage is great, the same as when it was much younger. ( I am anal about this and have tracked fuel use since the beginning of time) It is a high mileage bike, but has been meticulously maintained. The usual tune up items have been looked after. New plugs, check valves, sync throttle bodies. Fuel lines are relatively new, replaced in the last three years. The BB screw has been removed and the TBs flushed. I have run a quite few tanks of fuel injection cleaner. My next step is to inspect and reseat the connectors for the various sensors. Oxygen, temperature, air. My internet searching has not uncovered any symptoms like this reported. Any ideas out there?
Last summer my 2002, R1150RS developed an issue when starting off from a stop. At low rpms, the engine will cough and sputter, and almost stall as if its not getting enough fuel. Pulling in the clutch and blipping or holding the throttle open for a few seconds resolves the issue. What makes it curious is that it only occurs at certain temperatures. For example, on the first start of the day, when the engine is cold, there is no problem. If I stop for fuel, and I restart shortly afterwards while the engine is still hot, there is no problem. On the other hand, if I were to take a 15 minute break during the fuel stop, the problem will definitely pop up. In fact anytime the RID temperature display is between 1 to 4 bars upon restart, it happens. Once underway, even under heavy load, there is never a hiccup or misfire. Having to stop and at a traffic light, no issue getting underway again. The bike has always run smoothly, it never has had any surging issue. Mileage is great, the same as when it was much younger. ( I am anal about this and have tracked fuel use since the beginning of time) It is a high mileage bike, but has been meticulously maintained. The usual tune up items have been looked after. New plugs, check valves, sync throttle bodies. Fuel lines are relatively new, replaced in the last three years. The BB screw has been removed and the TBs flushed. I have run a quite few tanks of fuel injection cleaner. My next step is to inspect and reseat the connectors for the various sensors. Oxygen, temperature, air. My internet searching has not uncovered any symptoms like this reported. Any ideas out there?