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Villiers MK 40 Spark or not

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Villiers MK 40 Spark or not

Post by GrahamNZ on Mon Dec 17 2018, 06:30

Hi Guys..just purchased a complete and reasonable looking MK40. Buyer said it has spark but can't find it. So it  has the head off and  bought from the UK , just delivered, new coil,points and capacitor. Fitted it up, no spark ...4 ohms on the low side 3.95K ohms on the high side, 12 thou points. Put  a new plug on the HT lead sitting on the block nothing there. Any tips would be appreciated ...cheers  Graham Tokoroa NZ


Will reply when I can there is a 7 day stand down period


Last edited by GrahamNZ on Mon Dec 17 2018, 17:38; edited 1 time in total

GrahamNZ

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Re: Villiers MK 40 Spark or not

Post by Woodsman on Mon Dec 17 2018, 10:10

Hi Graham,

Resistance readings on coil look fine.
First off check for short circuit somewhere else e.g LT between coil and body (does yours have spiral metal tube around LT lead to contact breaker?) Possible short on cut out button, Is HT lead in good shape? Old school, i.e. non resistive,  HT lead?

BTW -  I have manual. PM me with email address if you need one.

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Re: Villiers MK 40 Spark or not

Post by GrahamNZ on Tue Dec 18 2018, 22:18

Thanks I redid everything as you suggested and got a spark...

GrahamNZ

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Location : Tokoroa

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Re: Villiers MK 40 Spark or not

Post by Woodsman on Wed Dec 19 2018, 09:44

Great news. Please keep us posted.

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Regards Paul
Tha can alus tell a Yorkshireman - but tha can't tell him much.
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