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FJR Motorcycle Forums
Technical & Mechanical Problems
GEN2 stumble during takeoff
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<blockquote data-quote="thefix" data-source="post: 1457732" data-attributes="member: 97842"><p>You need to check the Air Flow/vacuum sensor bolted to the back of the throttle bodies. It sits towards the left and has a single hose on it. Remove the sensor (2 small bolts 10mm heads I think). Disconnect hose carefully, use a safe cleaner (alcohol , WD40, mineral spirits , or maybe lacquer thinner due to it's fast evaporation) on both the NIPPLE and Hose end. The nip and possibly hose is often clogged a bit with these symptoms. Do not spray things into the nip unless its an electrical cleaner which evaporates in seconds, some folks use brake cleaner which is strong. I do not know the exact composition of the sensor. That's why I hesitate on spraying things in. Carefully clean out , something brown/black should be obvious, and reassemble. May need to replace the short hose section. This is a new issue. Ran great before. Don't mask the symptoms by "reinventing the wheel".</p></blockquote><p></p>
[QUOTE="thefix, post: 1457732, member: 97842"] You need to check the Air Flow/vacuum sensor bolted to the back of the throttle bodies. It sits towards the left and has a single hose on it. Remove the sensor (2 small bolts 10mm heads I think). Disconnect hose carefully, use a safe cleaner (alcohol , WD40, mineral spirits , or maybe lacquer thinner due to it's fast evaporation) on both the NIPPLE and Hose end. The nip and possibly hose is often clogged a bit with these symptoms. Do not spray things into the nip unless its an electrical cleaner which evaporates in seconds, some folks use brake cleaner which is strong. I do not know the exact composition of the sensor. That's why I hesitate on spraying things in. Carefully clean out , something brown/black should be obvious, and reassemble. May need to replace the short hose section. This is a new issue. Ran great before. Don't mask the symptoms by "reinventing the wheel". [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
GEN2 stumble during takeoff
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