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FJR Motorcycle Forums
Technical & Mechanical Problems
MISSFIRE ON 06A NOW A MAJOR PROBLEM CAN ANYONE HELP PLEASE?
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<blockquote data-quote="racer157" data-source="post: 212384" data-attributes="member: 4130"><p>I don't know if your problem has been resolved yet. Here are a few things you might try to isolate the problem.</p><p></p><p>raise the tank and take a NON-flammable spray devise and start the engine. Spray around the rubber attachments between the throttle body and the head. If the idle changes you have an air leak in one of the couplers. Sometimes when the bikes are assembled the rubber gets cut or pinched and a perfect seal is no longer possible. The spray will tell you if there is a leak. Another item to check are the reed valves in the AIR system on top of the engine. Simply remove each of the hoses one at a time and plug to hole with a baggy and a rubber band. If it stops popping you found the bad reed. Did the shops bother to do a leak down test or a compression test? Another thing you can test is the fuel injectors them selves. If you can get you hands on a stethoscope or a long blue large diameter straw like they use at McDonald's , start the bike and place the scope or straw so you get an amplified sound you can hear and place the other end on the throttle body by each of the injectors. Have another person slowly increase the RPM and listen to see that all four injectors are making the same sound. There are other things you can test as well but I would try these first.</p></blockquote><p></p>
[QUOTE="racer157, post: 212384, member: 4130"] I don't know if your problem has been resolved yet. Here are a few things you might try to isolate the problem. raise the tank and take a NON-flammable spray devise and start the engine. Spray around the rubber attachments between the throttle body and the head. If the idle changes you have an air leak in one of the couplers. Sometimes when the bikes are assembled the rubber gets cut or pinched and a perfect seal is no longer possible. The spray will tell you if there is a leak. Another item to check are the reed valves in the AIR system on top of the engine. Simply remove each of the hoses one at a time and plug to hole with a baggy and a rubber band. If it stops popping you found the bad reed. Did the shops bother to do a leak down test or a compression test? Another thing you can test is the fuel injectors them selves. If you can get you hands on a stethoscope or a long blue large diameter straw like they use at McDonald's , start the bike and place the scope or straw so you get an amplified sound you can hear and place the other end on the throttle body by each of the injectors. Have another person slowly increase the RPM and listen to see that all four injectors are making the same sound. There are other things you can test as well but I would try these first. [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
MISSFIRE ON 06A NOW A MAJOR PROBLEM CAN ANYONE HELP PLEASE?
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