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Post by raford3 on Oct 12, 2011 15:02:59 GMT -6
Check the hole on the intake manifold where the petcock was attached and make sure it is well plugged, cause it sounds like your carb isn't operating the needle valve. It does that with engine vacuum which depends on everything being sealed up good.
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Post by raford3 on Oct 12, 2011 14:35:37 GMT -6
The air filter is okay? The housing is firmly attached to the carb, no leaks? If everything looks okay try restricting the filter partly with a piece of paper. Just for laughs. Tell me what that does.
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Post by raford3 on Oct 12, 2011 14:24:29 GMT -6
I bet you have the dreaded multiple issue problem.
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Post by raford3 on Oct 12, 2011 14:19:43 GMT -6
It should kick start and run with a dead battery.
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Post by raford3 on Oct 12, 2011 13:38:43 GMT -6
Mine tends to stall on take off with the screw backed off too far.
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Post by raford3 on Oct 12, 2011 13:32:44 GMT -6
p.s. do not test the spark plug wire with a volt/ohm meter it probably is 30k volts, way over range.
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Post by raford3 on Oct 12, 2011 13:11:20 GMT -6
My scooters stay outside in the rain uncovered and I've had switches go bad and the horn coil wouldn't work on one but that's it. The CDI is sealed. Get a volt/ohm meter and check the voltage at the battery it should be at least 12v, 12.6v is better. Check for fuel flow to the filter and if none check flow to the petcock valve, by diconnecting the hose while pinching it shut, open it then pinch it shut again and reconnect it. I think you may want to do a compression check by attaching a guage to the spark plug opening. I really don't suspect the spark plug unless it was mishandled during the testing, but if you attach it to a good ground, the screw with the wires going to it on the valve cover and it doesn't spark when kick staring then you may have to use substitution to diagnose the CDI/Plug Wire, Coil/Spark Plug system. Or you could move to Richmond, VA and you can have anything I've got.
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Post by raford3 on Oct 12, 2011 9:23:55 GMT -6
Keep what you've got, ride it at 40mph, 1 to 2 feet from the right side of the road instead of down the middle of the lane. Taking some of the lane forces drivers to slow down to wait for an opportunity to safely pass. If your'e too close to the edge they attempt to sqeeze by without slowing, but 1 to 2 feet allows a fairly easy pass. If your'e going 40 and there going 60 theyr'e overtaking you at a slow rate. Or you could go to the other end of the spectrum and buy a Hummer.
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Post by raford3 on Oct 11, 2011 20:46:59 GMT -6
When you took off the air filter it ran worse right? If so, I beleive it is getting too much air. If it has a less restrictive filter the carb will not get enough vaccum to operate the needle valve. If it runs on less than 1/4 throttle, but no more this may be the problem. It's too lean at the point the needle operates. If it has an after market filter I'd go back to OEM and try it. I had a similar problem, read my 50cc Air/Fuel mix post.
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Post by raford3 on Oct 10, 2011 20:13:27 GMT -6
I have a Dash 50 with a Keihin carb, 45/Pilot, 90/main. I changed the variator weights from 4.9g to 7.5g. I was trying to use a Uni Pod filter on it and I was too lean with the needle backed out all the way. I couldn't open the throttle very far or it would bog down. I put the stock filter back on and it ran fine, but I was wondering if I could get some more horsepower. I weigh 250lbs. Does anybody know what size main jet I should use to get the right fuel/air mixture cause I'm getting more air than I can use?
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