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Post by jayroid on Apr 7, 2015 12:05:55 GMT -5
Hello again...I need a little help..My scooter started to bog down at low rpm's.. from 0 to almost 1/2 throttle..almost stalls. After 1/2 throttle it runs fine. It doesn't do it when I first start it, only does it after it's warmed up. I've checked the jets and they're fine. Checked the valves and they're good. It's getting fuel. Fuel filter, air filter look good. I recently changed rear tire and didn't see any exhaust gasket on there. I put a new one on...Any ideas what it could be?  Thanks |
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Post by humanshield on Apr 7, 2015 12:10:52 GMT -5
Try RAISING the needle clip by one position (lower the needle by one)
Or before you do that, turn the mixture screw counterclockwise two turns and see if it improves.
Seems when cold, it's getting the fuel it needs but as it warms up, it may be getting too much in the lower range.
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Post by stevec on Apr 7, 2015 12:36:57 GMT -5
yes, what he said lol. can i have my donut now?  |
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Post by jayroid on Apr 7, 2015 13:45:05 GMT -5
Try RAISING the needle clip by one position (lower the needle by one) Or before you do that, turn the mixture screw counterclockwise two turns and see if it improves. Seems when cold, it's getting the fuel it needs but as it warms up, it may be getting too much in the lower range. So I should increase or lower the fuel mixture?..Counter-clockwise increases the fuel. |
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Post by Upgrayedd on Apr 7, 2015 14:07:35 GMT -5
sounds like a/f mix is off on bottom end. you mentioned it is ok when cold, but then once warmed up is too much fuel, perhaps the automatic choke is not functioning correctly?
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Post by Upgrayedd on Apr 7, 2015 14:10:43 GMT -5
also have you changed your air intake setup in any way that would affect airflow? if so, try putting it back as it was and see if that improves the issue.
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Post by jayroid on Apr 7, 2015 14:50:05 GMT -5
I put a new OEM stock air filter on last year. I haven't had any problems with it...I have a spare auto choke I'll try and see if that fixes it.
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Post by 90GTVert on Apr 8, 2015 8:35:32 GMT -5
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Post by humanshield on Apr 8, 2015 8:58:20 GMT -5
Yeah, I meant to mention the enricher and then forgot to go back and edit my first post. Then someone else mentioned it.
I hope the OP will post the final outcome so we all get better at diagnosing.
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Post by jayroid on Apr 8, 2015 16:17:21 GMT -5
UPDATE: It's fixed!...It was a combination of bad enricher and being out of tune after I went back to stock jets for the summer. I tuned it for about an hour. I could never get it to where the back tire didn't spin at all without bogging out. The back tire still spins barely, but this is the best tuned I have ever gotten it...She's purring! I hope that someday I will have faith in it to be completely reliable. I'm still a little wary about taking it very far. Hopefully it stays fixed for a while. Time to order a back up enricher just in case.  My favorite donut is chocolate glazed! |
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Post by Upgrayedd on Apr 8, 2015 16:56:48 GMT -5
UPDATE: It's fixed!...It was a combination of bad enricher and being out of tune after I went back to stock jets for the summer. I tuned it for about an hour. I could never get it to where the back tire didn't spin at all without bogging out. The back tire still spins barely, but this is the best tuned I have ever gotten it...She's purring! I hope that someday I will have faith in it to be completely reliable. I'm still a little wary about taking it very far. Hopefully it stays fixed for a while. Time to order a back up enricher just in case. My favorite donut is chocolate glazed! good deal |
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Post by humanshield on Apr 8, 2015 17:37:45 GMT -5
UPDATE: It's fixed!...It was a combination of bad enricher and being out of tune after I went back to stock jets for the summer. I tuned it for about an hour. I could never get it to where the back tire didn't spin at all without bogging out. The back tire still spins barely, but this is the best tuned I have ever gotten it...She's purring! I hope that someday I will have faith in it to be completely reliable. I'm still a little wary about taking it very far. Hopefully it stays fixed for a while. Time to order a back up enricher just in case. My favorite donut is chocolate glazed! And you deserve one for posting the final outcome.  Feels great when it works right don't it ? |
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Post by stevec on Apr 8, 2015 17:46:49 GMT -5
HEY! how come he gets a donut and i don't! lol
glad to hear you got it straightened out.
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