MG
The Classic Marque

As I asked a little while back, so now is the advice.

"Brits told to WFH and use ovens less as Middle East energy crisis explodes… and Rachel Reeves 'can't help because she's maxxed out Britain's credit card --"

https://www.dailymail.co.uk/news/article-15664681/Brits-told-WFH-use-ovens-Middle-East-energy-crisis-explodes-Rachel-Reeves-help-shes-maxxed-Britains-credit-card.html <...

Thanks Paul

It's a bit difficult to remember Paul if I'm honest, as when this problem started the car was in the garage, just warming the engine up in readiness for a run out and oil change. As is the case with all intermittent faults, it was difficult to locate and I did initially think that the problem was fuel related and it was just running out of petrol, as mostly I was getting a good spark, but that was...

Thanks for the advice everyone, took the Aux vent out and they are 4.5 , not sure if that’s good or bad but at least when I go to the tuner I will have a list of all the specs unless they have been tampered with Will. I assume with how it is at the moment it will at least work and the car will run in some form or other. Just need to get the engine back in and try it for size especially the dista...

Andy - did your tach suddenly drop to zero when you lost power or keep registering as the engine was spinning down like Nat's?

Nat, I've followed this thread with interest as I had a similar problem last year. The car would run absolutely fine and then suddenly die. Then if you left it a few minutes it would start and run fine and then die again. I checked everything, reterminated all the LT wires (as they looked like the could be suspect after 50 years) and even changed the fuel pump for good measure.

The car i...

BTW, I've done this kind of testing with analogue meters which average fluctuating voltages (and currents) well. I have found digital instruments can give different results depending on their internal design, which may do the same averaging, or may not. In some cases the reading will jump all over the place and never settle.

Measuring coil current can be another way of looking at this p...

No pain in the side Willy.

Those leads are fine, unless the coil lead goes very much higher when pulled about or twisted. Are they silicone cored or the original carbon string? The latter do go high resistance over time as the carbon dust seems to migrate, but silicone cored should be stable for decades and many tens of thousands of miles. Basic Hot Wires are fine at around £15, you c...

The F number on idle jets is the air bleed sizing for fine adjustment of the slow running/transition mixture.
As Daniel mentions F9 is the most common size and if swapping out idle jets to a different size like going from 45 to 50 it's good/best practice to stick to the same F number so you get a true indication of what the change has achieved
F8 is leaner that F9 "BUT BE AWARE" the F numb...

Maybe because that red wire was a bit tight it has broken inside from movement-or has a bad connection in the end terminal that attaches to the coil. Can you try and pull on the wire in sections while it's idling and see if the breakage can be tracked to a particular area. maybe stick a new terminal on it-
I've been sort of stepping back from this to be fair to Paul who always has good advic...