Author Topic: Hi guys. I may have mixed PPlyg leads  (Read 497 times)

Offline Ewen

  • A's Good Friend
  • ***
  • Join Date: Aug 2021
  • Posts: 107
  • Karma: 1
Hi guys. I may have mixed PPlyg leads
« on: 30.08. 2021 02:21 »
Hi guys. I have a 57 Goldflash. Does the plug lead closest to the cylinders from the mag go on the right hand cylinder. She won't start an is spitting back but I haven't touched the timing.

1957 Goldflash
1977 Bonneville
2005 BMW GS1200
Suzuki GN125

Offline TimK

  • A's Good Friend
  • ***
  • Join Date: Mar 2012
  • Posts: 175
  • Karma: 0
Re: Hi guys. I may have mixed PPlyg leads
« Reply #1 on: 30.08. 2021 02:47 »
Hi Ewen
It depends how the timing has been set - swap them over and give it another go, you can't do any harm.
Cheers
Tim
Tim Kerridge
Australia

Offline BSA_54A10

  • Wise & Enlightened
  • *
  • Join Date: May 2008
  • Posts: 2544
  • Karma: 37
    • BSA National
Re: Hi guys. I may have mixed PPlyg leads
« Reply #2 on: 30.08. 2021 07:44 »
I you fit an electronic ignition you will get a "wasted spark" because both plugs fire each stroke.
The  worst thing that can happen is a back fire through the exhaust
So do as TimK suggests /
Bike Beesa
Trevor

Offline Ewen

  • A's Good Friend
  • ***
  • Join Date: Aug 2021
  • Posts: 107
  • Karma: 1
Re: Hi guys. I may have mixed PPlyg leads
« Reply #3 on: 30.08. 2021 21:24 »
Thanks guys. I did a quick check and timing is out. Its been ages since I worked on this bike. I reset the points to 11 thou (was about 15, 16 thou) and I had forgotten how much that alters the timing. Hopefully onto a solution now.

1957 Goldflash
1977 Bonneville
2005 BMW GS1200
Suzuki GN125

Offline Ewen

  • A's Good Friend
  • ***
  • Join Date: Aug 2021
  • Posts: 107
  • Karma: 1
Re: Hi guys. I may have mixed PPlyg leads
« Reply #4 on: 30.08. 2021 21:31 »
Got the wee mirror and torch out... confirmed that brass contact in slip ring was in line with with the correct lead. Just remembered that obvious thing.... I'm out of practise.

1957 Goldflash
1977 Bonneville
2005 BMW GS1200
Suzuki GN125