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FJR Motorcycle Forums
Technical & Mechanical Problems
no start.... please help if you can
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<blockquote data-quote="Fred W" data-source="post: 1405162" data-attributes="member: 3828"><p>This symptom came up once in the past. The whirring noise is the fuel pump, which normally runs for a second or two at key-on if the kill switch is in the run position. Apparently the fuel pump also runs during engine cranking, but we usually dont notice it because the starter motor makes much more noise. So, the fact that the fuel pump is turning on when you thumb the start button says that the ECU sees you hitting the button.</p><p></p><p>My guess would be the starter motor relay is not operating. Its a big high current relay and may be stuck. When it does operate, if you dont have the starter motor turning over and making noise, you should hear a fairly loud click come from it as the solenoid energizes. If there is no click it could be something interrupting the path to the solenoid coil.</p></blockquote><p></p>
[QUOTE="Fred W, post: 1405162, member: 3828"] This symptom came up once in the past. The whirring noise is the fuel pump, which normally runs for a second or two at key-on if the kill switch is in the run position. Apparently the fuel pump also runs during engine cranking, but we usually dont notice it because the starter motor makes much more noise. So, the fact that the fuel pump is turning on when you thumb the start button says that the ECU sees you hitting the button. My guess would be the starter motor relay is not operating. Its a big high current relay and may be stuck. When it does operate, if you dont have the starter motor turning over and making noise, you should hear a fairly loud click come from it as the solenoid energizes. If there is no click it could be something interrupting the path to the solenoid coil. [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
no start.... please help if you can
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