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FJR Motorcycle Forums
Technical & Mechanical Problems
Weird symptoms. Need your expertise please...
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<blockquote data-quote="mikerider" data-source="post: 1425885" data-attributes="member: 3249"><p>Just filled up this morning, as usual, after 250 miles and filled with 5.8 gal. No improvement. Still die at idle after riding for 25 miles to work. I should use a different gas station. Stupid me. I used the same gas station as before.</p><p></p><p>More observations:</p><p></p><p>- When riding on the freeway at ~70 mph, holding the clutch and return the throttle to idle, I saw the engine rpm slowly dropped back to the lowest mark (probably around 500 rpms) and the engine died while cruising. However, everything else on the dash still worked as usual even after the engine died: speed/coolant temp/outside temp etc... still displayed properly and no check engine light. I'm pretty sure this rules out electrical problem?</p><p></p><p>- Release the clutch restarted it. Then when clutched or stopped, I had to open and hold the throttle to keep it above 1000 rpms so the engine doesn't die. After arriving at work after 25 miles, it still died when I closed the throttle. After a few restart/die/restart in the parking, the throttle is back to normal at around 1100rpm and did not die.</p><p></p><p>- Does this sound like TPS problem? I'll run the diag tonight. I didn't not see check engine light turned on? Would TPS problem trigger the check engine light?</p><p></p><p>- It also ruled out charcoal canister problem too, yes (as the canister isn't in the loop)?</p><p></p><p>Things to try next:</p><p></p><p>- I always filled up after riding 250 miles since new and never had any problem until now. May be I ran it too low? But that was how I filled it for the last 40k miles. I'll fill up at 200 miles next time. I also never overfilled. I stopped when the gasoline reached the bottom of the filler neck. Again, always that way for the last 40k miles.</p><p></p><p>Thank you all!</p><p> mike-</p></blockquote><p></p>
[QUOTE="mikerider, post: 1425885, member: 3249"] Just filled up this morning, as usual, after 250 miles and filled with 5.8 gal. No improvement. Still die at idle after riding for 25 miles to work. I should use a different gas station. Stupid me. I used the same gas station as before. More observations: - When riding on the freeway at ~70 mph, holding the clutch and return the throttle to idle, I saw the engine rpm slowly dropped back to the lowest mark (probably around 500 rpms) and the engine died while cruising. However, everything else on the dash still worked as usual even after the engine died: speed/coolant temp/outside temp etc... still displayed properly and no check engine light. I'm pretty sure this rules out electrical problem? - Release the clutch restarted it. Then when clutched or stopped, I had to open and hold the throttle to keep it above 1000 rpms so the engine doesn't die. After arriving at work after 25 miles, it still died when I closed the throttle. After a few restart/die/restart in the parking, the throttle is back to normal at around 1100rpm and did not die. - Does this sound like TPS problem? I'll run the diag tonight. I didn't not see check engine light turned on? Would TPS problem trigger the check engine light? - It also ruled out charcoal canister problem too, yes (as the canister isn't in the loop)? Things to try next: - I always filled up after riding 250 miles since new and never had any problem until now. May be I ran it too low? But that was how I filled it for the last 40k miles. I'll fill up at 200 miles next time. I also never overfilled. I stopped when the gasoline reached the bottom of the filler neck. Again, always that way for the last 40k miles. Thank you all! mike- [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
Weird symptoms. Need your expertise please...
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