An Update - You have to laugh!
So, I ordered new coils, and while waiting for them, i decided to remove the carbs again and go through everything one more time, albeit a bit slower.
I rechecked the float heights and depending on how you had the bowls tilted, they were either spot on or miles out! So I redid them and stuck them back on the bike, only to see No 2 leaking!
You live and learn, so i took them off again and went through the process again - however this time, I stuck a bit of clear tube in the drain holes of 3 and 4 before filling with petrol on the bench. One overflowed and the other was not filling up. So off with the bowls again and repeat the process, which i must of done 4 or 5 times until both bowls were filling to just below where the bowl meets the main body. I repeated the process for 1&2 and eventually got those the same. This process seems to be an art; I even made a float height template using an old credit card, which saved me loads of measuring time.
While I had the carbs off, I also checked all the slider needles; they had the circlip on pos 2, and I cleaned and blew through everything in sight. Also did Bryans bench sync again.
Carbs back on.
New coils arrived a few days later; I decided to test them with my multimeter, only to discover that they also had the same readings as my originals. Turns out I don't know how to use a multimeter correctly, i had it on the wrong setting. Now I'm getting the correct reading on the secondary, so I went back to my original coils and lo and behold they are OK! I double checked the caps and ht leads and they are within spec.
Put them back on the bike, and start the old girl up. With the chock on, it didn't want to know, but as soon as i took it off the bike, it started and, at a sensible rev limit, no racing to 6000rpm. It was running a bit lumpy, which I put down to needing to go through the tuning process, but also discovered No. 4 was not firing - which is where I started all this!
Turns out the spark plug is dead! I've ordered 4 new ones.
Hopefully, with the new plugs installed, I can start the tuning process with a bit more confidence!
The new coils are being returned.
