| Sponsors
| | |
Donations accepted to help with server fees and other expenses. Thank you!
| | | | Motorized Bicycle General Discussion Topics on bicycle engine kits, help articles, repair and modifications for your motorized bicycles | Bicycle Motor Refuses to start Discussion at Motorized Bicycle Engine Kit Forum in the Motorized Bicycle General Discussion forum. I hate to jump in here and add my two cents after you have had so many members trying to ...  | | 
04-17-2008, 07:26 PM
| | Master Motorized Bicycle Builder | | Join Date: Mar 2008
Posts: 169
| | Re: Motor Refuses to start I hate to jump in here and add my two cents after you have had so many members trying to help you. Someone mentioned to you that if you put a little gas into the sparkplug hole the bike should start. It is true, I would bet that this bike would start with the carb off the bike by putting fuel into the sparkplug hole.
If there is a broken KEY on your magneto (left side, front cover) the engine MAY spark but at the wrong time.
Also, in my snowmobiling days, I found that a sparkplug would spark when out of the engine but under compression, it would not start or even fire up. | 
04-17-2008, 07:48 PM
|  | Master Motorized Bicycle Builder | | Join Date: Mar 2008 Location: Ottawa
Posts: 120
| | Re: Motor Refuses to start Quote:
Originally Posted by Norman That thing is part of the clutch if it looked like a little rod there will also be a ball coming out if you keep poking aroung in there. Don't loose those or it will not work. That cover is not the covers we wanted you to take off in the first place its the cover that has the wiring going into it. You will also need to take off the clutch cover to jam the gears so you can unscrew the nut on the mag side so you can see if these key ways line up ot not.
Do you understand? | No I don't. You told me to take off the clutch cover. As far as I can tell I have done this. What side of the motor would I be taking this cover off ? I have the side where wire's come out and then the side opposite to the chain/wire side. | 
04-17-2008, 07:50 PM
|  | Master Motorized Bicycle Builder | | Join Date: Mar 2008 Location: Ottawa
Posts: 120
| | Re: Motor Refuses to start Quote:
Originally Posted by toytime I hate to jump in here and add my two cents after you have had so many members trying to help you. Someone mentioned to you that if you put a little gas into the sparkplug hole the bike should start. It is true, I would bet that this bike would start with the carb off the bike by putting fuel into the sparkplug hole.
If there is a broken KEY on your magneto (left side, front cover) the engine MAY spark but at the wrong time.
Also, in my snowmobiling days, I found that a sparkplug would spark when out of the engine but under compression, it would not start or even fire up. | I have put gas into the engine and tried to start it. It did not work that either. | 
04-17-2008, 08:00 PM
| | Master Motorized Bicycle Builder | | Join Date: Mar 2008
Posts: 169
| | Re: Motor Refuses to start The answers you ask for have been answered but I can understand your frustration and also understand that you are feeling "lost". The reason it may not fire when you put gas inside the sparkplug hole is because you may have a broken key. You may be sparking at the wrong time, like when the piston is at the bottom of it's travel. The cover you want to take off is next to the one you took off. It has 4 bolts holding it. Under there you will find a round thing . if you spin it, the engine has to turn as well .I will try to find pics for you and will post them for you
Last edited by toytime : 04-17-2008 at 08:08 PM.
| 
04-17-2008, 08:42 PM
| | Master Motorized Bicycle Builder | | Join Date: Mar 2008
Posts: 169
| | Re: Motor Refuses to start Here is a pic that member Norman posted with the cover removed.
Here is a link that may help you to see the magneto. See if yours is "fried". YouTube - Magneto Install | 
04-17-2008, 09:13 PM
|  | Master Motorized Bicycle Builder | | Join Date: Mar 2008 Location: Ottawa
Posts: 120
| | Re: Motor Refuses to start I see how I have to jam the gears in order to remove the nut. The thing with wire soldered on to ..What is that called ? | 
04-17-2008, 09:17 PM
| | Master Motorized Bicycle Builder | | Join Date: Mar 2008
Posts: 169
| | Re: Motor Refuses to start Magneto....that is what gives you power/electricity for your spark. It may have a blue, white and black wire going to your CDI box | 
04-17-2008, 09:50 PM
|  | Master Motorized Bicycle Builder | | Join Date: Mar 2008 Location: Ottawa
Posts: 120
| | Re: Motor Refuses to start Quote:
Originally Posted by toytime Magneto....that is what gives you power/electricity for your spark. It may have a blue, white and black wire going to your CDI box | That's what I thought it was. It does not look dead or fried. looks normal to me. nothing like the one in the video that was all black. Just for kicks I removed the cover where the spark plug sits. I can clearly see the piston ? moving up and down. I can make it move by turning that thing beside the Magneto and it even rotates around when I left the back wheel up and pedal the bike.
This may seem very lame..However I and my roommate thought of a theory..Could my clutch arm be in or out to much and thus the motor is stuck in neutral sorta a speak?? | 
04-18-2008, 06:03 AM
|  | Master Motorized Bicycle Builder | | Join Date: Jan 2008 Location: north carolina
Posts: 3,888
| | Re: Motor Refuses to start Some of the guys have had issues with the clutch slipping so that the engine was not turning when the clutch was released. but if you pedal the bike and the piston is moving up and down I can't see that being the problem but someone else would know better. | 
04-18-2008, 07:41 AM
| | Master Motorized Bicycle Builder | | Join Date: Mar 2008
Posts: 169
| | Re: Motor Refuses to start I agree with Deacan, All is good with clutch and you are getting off track. Please make sure you don't get dirt inside the cylinder with your "cover",as you called it (Head) off.
You said at the beginning of this thread that the bike was running until you changed the sparkplug. Lets start all over again. Inside the CDI.(little black box) there is what looks like a nail or screw.....that is what your sparkplug wire screws onto. Hold the box with one hand and with your other hand, unscrew your plarkplug wire from the box. Don't be afraid, just turn the wire to the left and pull at the same time. Now get a pair of side cutters or snips and cut off a half an inch from the end of the wire.
You should now see a nice clean wire in the centre. As you screw the wire back in place (onto the CDI) ,try to picture that nail/screw poking into your sparkplug wire and making contact with the centre of your sparkplug wire as you turn right and push inward.
Now do the same with the other end..(sparkplug end). It also has what looks like a nail or screw sticking out.
Having done this, we hope that you have a good electrical connection going from your black box to your sparkplug.
Now put your head..(your "cover", as you called it ) back on the engine and remember to tighten the four nuts in an X pattern...as in...Tighten the 10 o'clock nut, then the 4 o'clock nut, then the 2 followed by the 8. Do this at least three times as you are trying to tighten the head down evenly without warping the head. I hope you were able to follow that...lol.
Now see if you are getting a spark....if not, we are back to seeing if your KEY is broke and as you were told earlier, you will have to remove that nut and look to see if the slots are both in line. When a Key is installed half of the key slides into each part.so that there is only one way for the two parts to be put back together.
Sorry if any of this was hard to grasp, but it's hard to tell a person what to do in words.
The sad part is that if the moter was in front of most of the members here, we would have it running or at least be able to tell you what your problem was, in 15 minutes | | Thread Tools | | | | Display Modes | Linear Mode |
Posting Rules
| You may not post new threads You may not post replies You may not post attachments You may not edit your posts HTML code is Off | | | All times are GMT -5. The time now is 07:57 AM. | | |