Author Topic: S6 sparking problem  (Read 787 times)

0 Members and 1 Guest are viewing this topic.

Offline Martin foot

  • Member
  • *
  • Join Date: Nov 2018
  • Posts: 4
  • Location: Bristol
S6 sparking problem
« on: 03 Mar 2021 at 20:52 »
 My s6 mag has a spark out of the engine but no spark when fitted into engine! Any ideas?

Offline Hamwic

  • Full Member
  • **
  • Join Date: Feb 2020
  • Posts: 58
  • Location: Hampshire, UK
Re: S6 sparking problem
« Reply #1 on: 04 Mar 2021 at 08:19 »
Do you have a kill switch, and is it connected? It might be permanently on if the wire to it is trapped somewhere. presumably the mag is actually rotating, and timed to the right cylinder?

Keep us posted!
Doug

Offline eddie

  • Master Member
  • ****
  • Join Date: Mar 2006
  • Posts: 1667
  • Location: Hampshire, UK
Re: S6 sparking problem
« Reply #2 on: 04 Mar 2021 at 09:38 »
Hi Martin,
                Have you got the correct rotation magneto? On the S/T6, the magneto turns in the opposite direction to the crankshaft. With the mag off the engine, you could be turning it in the wrong direction when you obtain a spark.

   Regards,
                  Eddie.

Offline Martin foot

  • Member
  • *
  • Join Date: Nov 2018
  • Posts: 4
  • Location: Bristol
Re: S6 sparking problem
« Reply #3 on: 04 Mar 2021 at 21:01 »
Hi Eddie
Yes I have the correct rotation and turn it the correct way when out of the engine!

Offline Martin foot

  • Member
  • *
  • Join Date: Nov 2018
  • Posts: 4
  • Location: Bristol
Re: S6 sparking problem
« Reply #4 on: 04 Mar 2021 at 21:03 »
Hi Doug
I do not have a kill switch but thanks for response

Offline EW-Ron

  • Senior Member
  • ***
  • Join Date: Jan 2020
  • Posts: 181
  • Location: Oztralia
Re: S6 sparking problem
« Reply #5 on: 05 Mar 2021 at 02:20 »
Have you got a good electrical connection between maggie and engine ?

I've heard of someone who had much difficulty especially with starting,
and he discovered that the maggie was sort-of insulated from the engine.
A simple wire between the two improved things, muchly.

Is bolting the magneto down warping something, perhaps ?
Unlikely, but its a strange problem.

Offline yosemite

  • Full Member
  • **
  • Join Date: Aug 2017
  • Posts: 43
  • Location: kelso united kingdom
Re: S6 sparking problem
« Reply #6 on: 05 Mar 2021 at 10:27 »
can I ask how you are rotating the mag when off the bike? by hand or with something like an electric drill? if you are using an electric drill then the speed of rotation on the bike may be slower and not result in a spark.

Offline Martin foot

  • Member
  • *
  • Join Date: Nov 2018
  • Posts: 4
  • Location: Bristol
Re: S6 sparking problem
« Reply #7 on: 05 Mar 2021 at 22:20 »
Rotating mag by hand thanks

Offline graeme

  • Master Member
  • ****
  • Join Date: Oct 2004
  • Posts: 610
  • Location: Hobart, Australia
Re: S6 sparking problem
« Reply #8 on: 12 Mar 2021 at 04:54 »
I'm not sure if this is true for magnetos, but I have experienced ignition systems on Italian bikes (Moto Morini, electronic ignition) that will spark happily with the plugs out, but not spark under compression. Maybe the maggy needs some attention