Post by stevensonrc on Jul 15, 2012 15:21:42 GMT -6
Hey all I have been working on a 2007 sunl 250-22 and it recently quit during a ride into town (about 5 miles). I had gone perhaps a half of a mile when the darn thing up and quit on me. It was running smooth then when I pulled up to a stop at a one lane bridge it was running one minute then the next dead. The engine quit all gauges died no indication of power. I have currently tried the following:
1. Trickle charged over night 2. Replaced the starter coil 3. Replaced the solenoid 4. Replaced all the fuses & fuse box
Nothing changes. I turn the key and no power. I erplced the iginiton coil, and the solenoid no change. I noticed if I put a jumper across the solenoid the starter tries to crank, but it doesn't quite turn over. I noticed when I replaced the fuses that some of the wiring between the wiring harness and the fuse box was melted, so I replaced the fuze box. I am still not getting any electricity to the starter or the gauges. If some one could give me their opinion as to if I should replace the entire wiring harness and if I should try to find a sunl or use a rocketa instead, as most of these are basically the same scoot with different branding.
Do you have a volt meter? I suspect a bad connection (12 volt power or fuse related) rather than a failure of one of the other components.
1-Verify the battery voltage. 2-If you have the positive lead on the battery and the negative lead on the frame, do you still have 12 volts or is it negative 12 volts? Most systems (as far as I know) are ground on the frame. This allows you to continue testing with the negative meter lead on the frame or battery. 3-With the key on, check all fuses in place, both sides. If you can get at the wire terminals at the fuses, check them too. I had a fuse that looked good, but one terminal was pushed down so it wasn't making full contact. 4-Check the terminals at or near your major components: starter, ignition coil, gauges, etc.
As you start to narrow down where you do and do not have power, you can start looking for the problem in the circuit. From the description, it is very likely that one bad connection or fuse could be to blame for everything. You just need to start tracing down circuits and power.
This is time consuming, but should work for you.
Don-Winemaker, Big Green Egg owner and smoker of pork! Black CF Moto Jetmax. Blue YY250T with electric fuel pump, front LED turn signals, bike speedometer and other improvements.
I know you said you checked all the fuses. But on the Roketa 54b there is a 30a fuse hidden under the right rear tire panel. It's connected to the starter solenoid. If your bike is like this there will be one fuse (being used) and a spare. If this fuse is blown nothing will work..the bike is just dead until you replace it. If this is the problem you could have a short that caused it.