KymcoForum.com
Scooters - 125 to 300 => People 150 => Topic started by: roguewave on November 29, 2015, 04:58:42 PM
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So I left it sit for a year or so, (only 600 miles on it) it will only start for a few seconds and die. No throttle response, it will just die. Won't even idle. I'm going to take off the plastic so I can get a look at the carb set up. Not easy getting all the plastic off, any on line shop manuals out there?
Thanks for any input
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Dont take the plastic off! Its not necessary. Just lift up your seat, and underneath you will see 5 nuts. 3 up top near fuel filler and 2 chrome ones below in storage area. They are 10mm. Take the nuts off and completely lift off seat assembly. You will have complete access to your carb on top. Super easy!
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Thanks! took carb off then bowl, no trash and not gummed up. Dang...thought for sure I'd see something. Gas flows fine from bottom of fuel tank while cranking.
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I would drain tank and put in fresh fuel with some Seafoam in it. Couldnt hurt.
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Rogue, do not discount the jets or passages plugged with varnish or ethanol gas gunk. Especially the idle jet which is beyond tiny. Usually the first to get blocked.
Karl
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Thanks I will, can't figure out the start for a second or two and then die. No throttle response, it just dies. I'll figure it out eventually....I think ::)
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My '05 had begun doing this exact same issue. Dusting off this thread to see if it was resolved....
Sent from my SM-G950U using Tapatalk
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My '05 had begun doing this exact same issue. Dusting off this thread to see if it was resolved....
Sent from my SM-G950U using Tapatalk
It would not hurt for you to take the carb off and give it a good cleaning, particularly the tiny passages inside the jets. Some of the passages are just a little wider than a boars hair and any gunk in there will affect the performance. If you do not know how to clean the carb, there are many video tutorials. Good luck!
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My '05 had begun doing this exact same issue. Dusting off this thread to see if it was resolved....
Sent from my SM-G950U using Tapatalk
Did your machine sit for a period of time?
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Did your machine sit for a period of time?
Just one winter, as I was told by the P.O..
I just picked it up.... but after the start, she'll run for just one second - then die. Throttle movement is no help.
Sent from my SM-G950U using Tapatalk
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Just one winter, as I was told by the P.O..
I just picked it up.... but after the start, she'll run for just one second - then die. Throttle movement is no help.
Sent from my SM-G950U using Tapatalk
Just a couple months of inactivity with ethanol fuel and no fuel stabilizer could easily lead to clogging of the idle jet and of the symptoms you describe.
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Just one winter, as I was told by the P.O..
I just picked it up.... but after the start, she'll run for just one second - then die. Throttle movement is no help.
Sent from my SM-G950U using Tapatalk
Needs a good carb cleaning IMHO.
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Needs a good carb cleaning IMHO.
Agreed. My last carb cleaning was a Super 8 2T. The bike would not idle correctly or accelerate properly. I removed the carb, removed the float bowl and everything looked clean, but I pulled the jets and cleaned them with carb cleaner overnite. After re-assembly the bike still did not run correctly. I removed the carb a 2nd time, completely disassembled the carb and placed all metal parts in the carb cleaner overnite. Inspecting the passages, I noticed that the passage from the idle jet to the carb throat was not a direct drill-through but that it had two 90° turns. So I could not put a brush or wire straight through. I could see that some light was making its way through, so I re-assembled and installed the carb. A little better, but not good. I removed the carb a 3rd time, completely disassembled the carb and placed all metal parts in the carb cleaner overnite again. After cleaning the carb again, I rinsed it and let it dry for a day. Then I put all the parts in an ultrasonic cleaner, rinsed them in water and blew them out with air. After I re-assembled and installed the carb, it starts and runs fine. But now I notice that a little gas will come out the overflow after I shut off the bike. That's right. I failed to bench test for a float valve leak. Here we go again.
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Agreed. My last carb cleaning was a Super 8 2T. The bike would not idle correctly or accelerate properly. I removed the carb, removed the float bowl and everything looked clean, but I pulled the jets and cleaned them with carb cleaner overnite. After re-assembly the bike still did not run correctly. I removed the carb a 2nd time, completely disassembled the carb and placed all metal parts in the carb cleaner overnite. Inspecting the passages, I noticed that the passage from the idle jet to the carb throat was not a direct drill-through but that it had two 90° turns. So I could not put a brush or wire straight through. I could see that some light was making its way through, so I re-assembled and installed the carb. A little better, but not good. I removed the carb a 3rd time, completely disassembled the carb and placed all metal parts in the carb cleaner overnite again. After cleaning the carb again, I rinsed it and let it dry for a day. Then I put all the parts in an ultrasonic cleaner, rinsed them in water and blew them out with air. After I re-assembled and installed the carb, it starts and runs fine. But now I notice that a little gas will come out the overflow after I shut off the bike. That's right. I failed to bench test for a float valve leak. Here we go again.
Wow - that's a stubborn carb!
I have a strong suspicion it's a dirty/gummy carb issue, but thought I'd run it past you all just in case I have missed something incredibly obvious about these bikes - esp since this is my first one.
I have some time this weekend, so I'm hoping to crack into it and take a peek...
We'll get it - slowly but surely.
Sent from my SM-G950U using Tapatalk
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CPT, its most likely your jets are clogged. Need to take some cleaner and get a fine wire to run through the holes.
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Yep. Clogged jets.
A quick cleaning did the trick! She's ripping right along now...
Thank you!
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Yep. Clogged jets.
A quick cleaning did the trick! She's ripping right along now...
Thank you!
Good job! Thanks for letting us know it was resolved. :D