Spitfire 1500 Coil

[SpitFire6]

On 05/12/2022 at 16:30, Pete Lewis said:

its my finding from failed cars is they cork up our rather low HT 

thers some iffy videos and clues on you tube   and problems of unglazed plugs on here 

 

1.  

 

Hi,
Came across this post.
The plug gaps were identical?
Seems strange he recorded a lower voltage on the end of the lead that then was connected via a 5K Ohm resistor to the tip.
Should he have not measured tip voltage as he did with the non-R plug?
Cheers,
Iain.