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Post by JR on Apr 22, 2013 18:06:00 GMT -5
you can install a electric fuel pump and not have to worry about it.
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Post by urbanmadness on Apr 22, 2013 18:08:20 GMT -5
I might do that to my other two bikes but this one is not mine, it belongs to a buddy.
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Sophomore Rider
Currently Offline
Posts: 183
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Joined: Mar 4, 2013 19:49:04 GMT -5
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Post by 4950cycle on Apr 23, 2013 23:47:45 GMT -5
Great products this Chinese stuff  I'm gonna start a Chinese Scooter forum called " Its the Challenge " LOL |
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Post by alleyoop on Apr 24, 2013 0:23:05 GMT -5
Well If if you think the pump is leaking then CHECK your VACUUM hose if it is wet then it is sucking gas from the VACUUM HOSE, If NOT your pump is fine, It IS DIESLING after shut down. Try the easy stuff first, put in higher octane, Try a colder plug, check the IDLE if high lower it.
The sucker could be loaded with carbon on top of the piston as well that acts like a lite charcoal.
Alleyoop
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Post by urbanmadness on Apr 25, 2013 11:18:06 GMT -5
Ok, I've pretty much figured out the problem with it hammering the starter clutch but the starter clutch is still not relieable. I actually got this bike to idle last night... huge but it means I have some work ahead of me. The idle mixture is too rich. I found it while trouble shooting everything. I bypassed all the emmisions, and ran a line to the fuel pump, and de acel valve on the carb and it was still running horible. When I pulled the vacuume line when running, with the port open, it actually started to idle smooth. Plug the port with my finger.... and it's starts to stumble and die. So I'm thinking idle mixture. Of course the screw is under the carb and has a nice brass plug covering it. So tonight, I'm putting stock jets back in the carb (it has the stock pilot jet already) drilling out the plug, and then I'm gonna adjust the a/f mixture.
So now the next problem. The new starter clutch is still a little wonkey (technical term)... It works most of the time, then it will freewheel. When it freewheels, if I tap the varaitor with a hammer, it will start working again. And no, I don't like tapping a variator with a hammer to get things to work. So, this is a question for Alleyopp, I'm thinking that maybe one of the bolts that holds the starter clutch to the stator bell is too tight? All of them too tight or not tight enough?
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Post by urbanmadness on Apr 28, 2013 0:23:56 GMT -5
Well, got the bike running half way decent now. It does have a little bogging when accelerating off of idle. Just need to do a little more fine tuning on the carb. It's  percent there. I do have an exhaust leak that will need to be addressed next. But of course, on the test drive... It died and the starter clutch decided to freewheel. I'm thinking it's defective. It's got less then 30 starts on it. I had to walk this bike home about three blocks. I was not a happy camper. So tomorrow, I get to drain the coolent, the oil and pull the stator cover off the bike again and see what's up. I bought the clutch from Scrappy dawg so I'm hoping they will exchange it. In the mean time, is there torque specs for the starter clutch to stator bell bolts? Thanks, Ray |
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Post by alleyoop on Apr 28, 2013 13:36:15 GMT -5
BUMMER!! What oil are you using in there? Good luck with getting a replacement for it. If you install it, it is usually yours but hope he exchanges it for you since it did not last but a few starts.
The springs are getting stuck in the retracted position so I would say TO TIGHT on the bolts.
I also have not found any specs on the Torque for the Clutch bolts. But try NOT SO TIGHT just snuge.
Alleyoop
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Post by urbanmadness on Apr 29, 2013 13:20:08 GMT -5
Ok thanks, I'll split the case and I'll try just snugging them down. I do have them quite tight now. I was more concerned getting them tightened evenly and the old one was on very tight.
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Post by JR on Apr 29, 2013 20:50:18 GMT -5
Did you download the cn 250 shop manual? If not it is in the manual forum we have. I may have the torque specs.
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Post by urbanmadness on Apr 29, 2013 21:11:09 GMT -5
Actually I didn't know there was one for the 250. I have one for the smaller scoots (150cc gy6)
I will defiantly download it as we have two and maybe a third one of these 250's in the "fleet"
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..BAD TO THE BONE..
percent there. I do have an exhaust leak that will need to be addressed next. But of course, on the test drive... It died and the starter clutch decided to freewheel. I'm thinking it's defective. It's got less then 30 starts on it. I had to walk this bike home about three blocks. I was not a happy camper. So tomorrow, I get to drain the coolent, the oil and pull the stator cover off the bike again and see what's up. I bought the clutch from Scrappy dawg so I'm hoping they will exchange it. In the mean time, is there torque specs for the starter clutch to stator bell bolts?