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Post by thetucks on Mar 29, 2014 17:52:18 GMT -5
I have a 2008 sunl 250 scooter that I just got. Its not running. the previous owner could not get it to run so he sold it to me.
This is the honda clone engine.
I checked the timing and the timing mark on the flywheel is lined up with the piston at tdc. I took the valve cover off and the valve lobe is lined up correctly also. I can get it to idle sometimes smooth but most of the time ruff. but if I try to give it any gas it will die. also it will not idle very long if I let it set and idle. after about 30 secs it will die. I have replaced the carb with a new one. I have replaced the electric choke. I have checked the fuel pump and it works good. I am stumped at what it could be. Any help will be greatly appreciated. thanks.
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Post by alleyoop on Mar 29, 2014 18:12:50 GMT -5
The first thing to do is adjust the Valves then after that adjust the carbs Fuel Ratio mixture.
Alleyoop
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Post by richardthescooter1 on Mar 29, 2014 18:46:37 GMT -5
Adjust the valve .004 intake and .006 exhaust  |
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New Rider
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Post by thetucks on Mar 29, 2014 18:53:20 GMT -5
Im not completly sure how to set the valves. than manual is not real clear on how to do it. But I believe I have them set and the carb adjusted. This is the honda clone engine so I cant just set the valves at .004 and .006.
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Post by alleyoop on Mar 29, 2014 22:01:50 GMT -5
The motor you have in it is it the HELIX 244cc Vertical motor?
If so this is how you adjust them on that motor:
Also how did you adjust the CARB?
Alleyoop
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Post by richardthescooter1 on Mar 30, 2014 7:20:58 GMT -5
That's true sorry I forgot  you have the 244cc, glad Alleyoop came to the rescue  |
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Post by ltdhpp on Mar 30, 2014 11:18:31 GMT -5
I'd start with a compression check. Are you using fresh gas?
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Post by urbanmadness on Apr 1, 2014 23:12:46 GMT -5
does it pop thru the carb when it dies?
Check compression, fuel, and spark.....What jet are you running and where is the idle screw set at?
should be running a 115 main, but it should run on a 110 (stock for the helix but lean according to the helix forums, they say a 115 really helps and it's what I'm running in mine)
a/f screw should be out at 2 1/4 turns and it should run... for testing, run vacuum to the decel valve on the carb and one to the fuel pump, and block off all the other vac lines.
If you still can't get it to run, then it's a little deeper. My money would be on a bad woodruff key, throwing off the ignition timing. If they key is bad, the stator rotor will shift a degree or two (won't take much) and retard the timing. On these engines, it don't take much.
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Post by rightlane on Apr 5, 2014 4:23:34 GMT -5
I'm just curious what you paid for the scooter thank you  |
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..BAD TO THE BONE..
