I assume having it plugged causes negative pressure in the tank and then stops fuel being pumped to the carb? Why then if it is left for a while to cool does it help?
A small amount of air is leaking in to the tank probably round the filler cap seal, when there is a vacuum in the tank. Unblock the tank breather and find a fitting to plumb it into a carb air filter.
It isn't cooling down. They system is not completely air tight. The time allows the vacuum to dissipate.
Our van did the same - was a fuel tank vacuum as suggested above. Coming back from the Lakes last summer we had to stop every 100 miles or so and take the filler cap off to vent the tank. PS: Glad you made it to Wales ok!
Ours was the dizzy when it did the same ......just saying probably wrong but that is what happened ....
i had a similar issue and it turned out to be the coil getting too hot, when the AA guy cooled it down with a wet rag it fired up straight away.
just to say the idea of fuel tank "breathers" is so it doesnt cause a vacuum , if you block it well.......... , other things can cause same prob too .
Good luck with the wedding Don't forget to vent the fuel cap before setting off (and once again at the church) Have fun y'all!
Interesting thread. My first thought was vacuum in the tank through a blocked air vent. My fizzie used to do it all the time years ago. I wasn't aware buses were likely to have that problem but the symptoms are identical.
