Post by rds on Jul 20, 2019 19:58:23 GMT
Hello all
after a 2 month lay up (scooter worked fine last time) i wanted to get my MOT but scooter would not start, even no kick start. Your advice is gratefully received using the symptoms below:
Testing for a spark on the plug was negative
replacing the plug yielded no spark
cleaning plug cap still no spark
Cap and plug lead tested ok for resistance
A while back I had an issue with the start/kill green loom wire at the crankcase junction block however it would run if disconnected and therefore replacing the damaged section restored operation. As a result I checked this again and this time there was no spark with the green loom wire disconnected.
battery voltage 12.55v
At the coil wires from the stator, i measured the following:
white to green: 530 ohm (Haynes states 500+/-20)
white to red: 12 Ohm (Haynes states 110+/- 5)
On the ignition unit terminals:
white to green: 89 Ohm
white to red: 470 Ohm
reg to green: 89 Ohm
On the same terminals to earth (cleaned up), I measured:
white to earth 0.02 Ohm
red to earth 0.47 Ohm
green to earth 0 Ohm
Kicking (with foot not motor) over the starter i had the following voltages on the coil wires from the stator
white to green: 60 vAC
white to red: 0.2 vAC
reg to green: 50 vAC
With all the above, i think i have shown that:
Primary and secondary HT coils are ok
Stator coils are OK
Hall sensor is ok.
Also i get lighting as i kick over with spark plug out to ease compression.
Plenty compression and fuel is ok too.
Advise and thought more than welcome.....
cheers
RDS
after a 2 month lay up (scooter worked fine last time) i wanted to get my MOT but scooter would not start, even no kick start. Your advice is gratefully received using the symptoms below:
Testing for a spark on the plug was negative
replacing the plug yielded no spark
cleaning plug cap still no spark
Cap and plug lead tested ok for resistance
A while back I had an issue with the start/kill green loom wire at the crankcase junction block however it would run if disconnected and therefore replacing the damaged section restored operation. As a result I checked this again and this time there was no spark with the green loom wire disconnected.
battery voltage 12.55v
At the coil wires from the stator, i measured the following:
white to green: 530 ohm (Haynes states 500+/-20)
white to red: 12 Ohm (Haynes states 110+/- 5)
On the ignition unit terminals:
white to green: 89 Ohm
white to red: 470 Ohm
reg to green: 89 Ohm
On the same terminals to earth (cleaned up), I measured:
white to earth 0.02 Ohm
red to earth 0.47 Ohm
green to earth 0 Ohm
Kicking (with foot not motor) over the starter i had the following voltages on the coil wires from the stator
white to green: 60 vAC
white to red: 0.2 vAC
reg to green: 50 vAC
With all the above, i think i have shown that:
Primary and secondary HT coils are ok
Stator coils are OK
Hall sensor is ok.
Also i get lighting as i kick over with spark plug out to ease compression.
Plenty compression and fuel is ok too.
Advise and thought more than welcome.....
cheers
RDS
