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| | | | | Motorized Bicycle Trouble Shooting Use this area to post problems that may arise that you could use some help in figuring out what is wrong with their bicycle motor and what needs to be done to achieve top performance. | It ran for a while Discussion at Motorized Bicycle Engine Kit Forum in the Motorized Bicycle Trouble Shooting forum. three weeks worth playing summary
1st run carb wrong, ran wide open- fixed installed barrel correctly
2nd run going to ...  | 
07-10-2008, 11:46 PM
| | Motorized Bicycle Apprentice | | Join Date: Jun 2008 Location: Kimberly,WI
Posts: 11
| | It ran for a while three weeks worth playing summary
1st run carb wrong, ran wide open- fixed installed barrel correctly
2nd run going to work pedaled over half way 6 miles total- ran and quit adjusted screw on carb top ran better still quit but restarted after short burst of pedals got home adjusted carb more
3rd ride to work ran good took long way home got home and hooked up kill switch ground to frame other to BLUE from engine
4th ride to work clutch cable pulled through no clutch by time got to work by that I mean clutch was engaged and would not pull off
installed new cable after work and made one lap around parking lot before engine faded and now wont start fire ... pedaled all 6 miles home holding in clutch!
now
I have spark at least some! (replaced stock wire and boot 8mm from autozone) added screw thing to sparkplug
I have fuel I have cleaned out the carb bowl found particles and flushed more gas through with bowl off installed clear filter in line
I get nothing with different adjustments
HELP! | 
07-11-2008, 12:13 AM
|  | Master Motorized Bicycle Builder | | Join Date: Mar 2008 Location: Treasure Coast, Florida
Posts: 594
| | Re: It ran for a while Do you see fuel in the filter? Are your Magneto/ CDI wires soldered or making a good connection? The stock connectors are no good. Disconnect the kill switch completely until you get it running good. Plug wire screwed into CDI tightly? Replace the spark plug, the chinese plugs are CARP.......I run NGK but Champion is also another choice and easier to find at auto parts stores....I'll bet it is one of these........
__________________
"No such thing as a stupid question, just a stupid answer"
48cc Grubee Starfire Round Head......
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07-11-2008, 12:27 AM
| | Motorized Bicycle Apprentice | | Join Date: Jun 2008 Location: Kimberly,WI
Posts: 11
| | Re: It ran for a while plenty o fuel -plug getting wet drying between tries
also I replaced CDI connector wires with new flat type and soldered them
kill switch is/has been off since problems
Ive been switchen between stock plug and that ngk5 one | 
07-11-2008, 12:32 AM
| | Motorized Bicycle Apprentice | | Join Date: Jun 2008 Location: Kimberly,WI
Posts: 11
| | Re: It ran for a while magneto wires I looked at seem tight
checked ground cleaned not very dirty
but I sanded and reinstalled anyway
got to go to bed must make money in 6.5hrs
check this tomorrow
thanks
Loren
check out the pic | 
07-11-2008, 09:02 AM
|  | MODERATOR | | Join Date: Jan 2008 Location: Ashtabula county, Ohio
Posts: 4,262
| | Re: It ran for a while Too rich? Where is your needle clip? Try ANOTHER new plug. Are you trying it with full choke or 3/4 choke? I had a little problem with the first two kits because I kept trying to use full choke....sometimes I'm just dense.
__________________ If it ain't broke, and you mess with it long enough, it will be. | 
07-12-2008, 11:41 AM
| | Motorized Bicycle Apprentice | | Join Date: Jun 2008 Location: Kimberly,WI
Posts: 11
| | Re: It ran for a while which way makes too rich needle lower or higher I think it must be higher but not sure and not sure where to set it up as a starting point
took a pic of carb | 
07-12-2008, 12:06 PM
|  | Moderator | | Join Date: Mar 2008 Location: Tucson,Arizona
Posts: 2,591
| | Re: It ran for a while Quote fron BKG
"The needle clip moves down for richer guys....if you move it down a notch, it raises the needle out of the jet more. With the taper of the needle and the opening in the jet, the area of where the fuel can flow through becomes larger." end Quote | 
07-12-2008, 02:09 PM
|  | MODERATOR | | Join Date: Jan 2008 Location: Ashtabula county, Ohio
Posts: 4,262
| | Re: It ran for a while Start at the second slot or notch from the top.
__________________ If it ain't broke, and you mess with it long enough, it will be. | 
07-13-2008, 12:41 AM
| | Motorized Bicycle Apprentice | | Join Date: Jun 2008 Location: Kimberly,WI
Posts: 11
| | Re: It ran for a while got back to the toy a couple hours ago
I purchased another new plug and had a hard time getting spark... so
(my 21 yr old daughter had the first bike I put together 2 yrs ago but abuse has left it in a basket)
I tried the cdi earlier now I took a look at the magneto cleaned off the light rust and switched it to my bike
presto ignition in the first few feet!
went around the block in the dark YEEEHAAA
here is a pic of the original center part from my bike.
Do you guys think the recessed area could have been the problem way back to my first ride/pedals into work this motor has less than 30 miles running | | Thread Tools | | | | Display Modes | Linear Mode |
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