Hi Bushy, i have to agree with squizzy, although the other problem may be that one of the 2 wires going back to the coil may have a break in it causing it to not work. The easiest way to test it would be to remove them from the carby housing and keep them separated and pull the motor over, and check for spark. There will obviously be spark as the engine ordinarily starts and runs. Now let the 2 wires make contact with one another and pull engine over, there should be no spark. If this is not the case then troubleshoot as per squizzy's instructions.
On a separate note the MA05556A is an older coil and is used with an externally mounted module. If it were on a VS160, which is a newer 2 stroke it would need to have the ignition module riveted to the block just under the carby. If it had no module then that would explain why it had no spark originally.
The MAO5599A has an inbuilt module and hence does not require the externally mounted module. From my findings i have found 3 different types of wiring "looms" for the MAO5599A:
1)The latest version only has 2 wires that go from the coil terminals directly to the carby, these 2 wires are normally black and grey.
2)the black and brown wire version where the black wire goes directly to the carby but the brown one is grounded to the block where the module would normally be mounted and then goes off to the carby. (I suppose they used to do this for better grounding)
3) and lastly a modified version of the above where one wire grounds directly to the metal part of the coil from the terminal and then the other 2 wires go directly from the terminals to the carby.
Hope this helps you but let us know how you go
Last edited by bigted; 09/01/16 11:30 AM.
