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Post by alleyoop on Sept 13, 2014 17:45:11 GMT -5
Ok now you do know turning the screw CLOCKWISE CUTS off AIR and allows more fuel to be mixed with less air and Counter Clockwise lets more air in . The only adjustment is either more AIR or LESS air on those carbs. To get more fuel you need to up jet the carb.
But how is your fuel delivery to the carb do you have a petcock and it is working right have you tested the fuel flow to the carb?
Take the fuel hose off the carb put it in a container and crank the motor over , fuel should stream out and stop when you stop cranking. If it just dribbles out you have a fuel delivery problem to the CARB.
Also DID YOU UP JET THE CARB and with what size jets?
Alleyoop
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Post by gumby on Sept 13, 2014 19:02:39 GMT -5
Yes, I tested the fuel flow. Just as you described actually. I expected fuel to run all over the place, so I made more preparations than necessary. LOL. Fuel shot out when I cranked the ignition. I also tested the spark by pulling the plug, reconnecting the wire, and touching it to the frame. I got nice blue spark.
I have not touched the carb one bit except for the 2 adjustable screws. So far the longest it's run has been about 6 seconds this afternoon after the air flow adjustment. It's gotta be fuel delivery right? Is it possible the carb is gummed up even though it's only got 1 mile on it? It's obviously been sitting in someone's warehouse for 3 years since the plate stamp says it was built in May 2011!
I figured I would get it running and see how fast I can get it going before I modify or replace anything. Might have to re-think that...
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Post by alleyoop on Sept 13, 2014 19:27:02 GMT -5
Yes, that is what I would do next is take the carb off and clean out the jets and spray carb cleaner in to them and make sure spray comes out of the outlets into the carb. Get a can of Spray Carb Cleaner they come with a long thin straw stick the straw in any holes you see and hopefully clear them out. Also check the float and make sure it is not set to low and not letting it fill up enough and to cover the jets. Alleyoop  |
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Post by gumby on Sept 13, 2014 20:50:18 GMT -5
I was afraid of that, but I'm prepared. I bought a can of carb cleaner yesterday. Figured I'd use it sometime. The biggest thing I'm worried about is getting all the hoses hooked back up in the proper spots after I'm done. I'll have to label them somehow! I'll update you later. Thanks for the diagram also!
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Post by alleyoop on Sept 13, 2014 21:28:30 GMT -5
Take pictures of the carb area and good thinking label them if not just put up a pictures of any your not sure of and all we need to know is where they are coming from or what one end is attached to and we can tell you where they go.
Label them 1, 1 2, 2 etc.. So you know 1 goes to 1 and 2 goes to 2 and so forth easy way no need to get fancy(HEHE).
Alleyoop
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Post by gumby on Sept 13, 2014 22:15:24 GMT -5
I have it all apart. The Jets seem fine. Look brand new. I can see and blow through them. I'm surprised at how small the opening is in the main jet! It has a number on it, either 68 or 89 depending on which way is up... The float looks good. My inexact tape measure method was 17 or 18 mm. I saw a video last week about carb tuning, and it talked about the pin in the throttle spring area. Would it help me to adjust that since I already have it apart? Anything else I can look for in the carb before I put it back together?
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Post by alleyoop on Sept 13, 2014 23:06:35 GMT -5
Did you spray carb cleaner into the jets and see the spray come out inside the carb area where the slide is?
Jets may be clean but the passages are usually smaller than the jet holes. The jet is a 68 a 89 would be for at least a 72-80cc BBK on the motor.
Can you take a picture of the carb with the bowl off. No do not mess with the spring and needle in the slide.
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Post by gumby on Sept 14, 2014 0:28:19 GMT -5
Yes, I sprayed carb cleaner through the jets and saw it come through. Although, not much with the smaller one.   |
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Post by alleyoop on Sept 14, 2014 0:37:26 GMT -5
Great, hope that will allow the fuel to flow out to the motor. Good job
Alleyoop
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Post by gumby on Sept 18, 2014 15:54:21 GMT -5
Finally got it running! After I put the carb back on, I couldn't get it to turn over. It would crank, but that was it. I had family in town so I didn't have time to work on it. Plus, I probably needed a break from this thing. I tested the fuel again and got nothing at all, so I figured I put something together wrong. The throttle assembly on top of the ccarb wasn't on all the way. I reattached it and bang! It startedrright up. Thank you so much for walking me through it. Now, it's time to Tuneit and get it running right. I noticed quite a bit of white smoke behind me as I was scooting around. Will the airflow screw adjust that? It also idles really high, like 3K rpms. I turned the idle screw all the way out and that was as low as it goes on the center stand. When I am on the scooter, it seems to drop idle to between 1800 and 2100. I even had to give it a little throttle at a stop sign cause it sounded like it wasggoing to die. I'mggoing to go get a new plug right now.
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Post by gumby on Sept 20, 2014 15:09:53 GMT -5
Doe anyone have any suggestions about lowering the idle on this beast? She wants to go... I turned the idle screw out all the way and it's still too high. I'm no expert, but the throttle cable seems off a bit. I don't know why, I can't explain it. Other than the screwy connectors on the cable were loose, and I tightened them up. Is there a way to adjust it? Is it possible that the cable is too tight and it's giving itself gas even when I don't twist the throttle?
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Post by valfam on Mar 24, 2015 13:10:52 GMT -5
this is the same problem I'm having with mine. I need to take the carb apart again.
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..BAD TO THE BONE..
