11-06-2021, 11:13 AM
Hi Martin
In the past, I have found that stopping for petrol is exactly the right time for carburettor temperature to peak due to under-bonnet heat soak. Normally, problems only experienced in exceptionally warm weather. The other danger period is idling in traffic, which I try to avoid !
A hot enough carb seems to suffer from vapour bubbles in the float chamber, which upsets the mixture. Any shortcomings in the ignition system can worsen the stalling/misfiring/surging effect, but I doubt that's a factor in your case.
Putting in petrol could have disturbed something in the tank, but the contents slosh around merrily anyway during normal driving so that seems unlikely.
I normally use BP Ulitmate 98 octane, and haven't had vapour problems for a long time. No idea if the two are connected, or if so, how.
In the past, I have found that stopping for petrol is exactly the right time for carburettor temperature to peak due to under-bonnet heat soak. Normally, problems only experienced in exceptionally warm weather. The other danger period is idling in traffic, which I try to avoid !
A hot enough carb seems to suffer from vapour bubbles in the float chamber, which upsets the mixture. Any shortcomings in the ignition system can worsen the stalling/misfiring/surging effect, but I doubt that's a factor in your case.
Putting in petrol could have disturbed something in the tank, but the contents slosh around merrily anyway during normal driving so that seems unlikely.
I normally use BP Ulitmate 98 octane, and haven't had vapour problems for a long time. No idea if the two are connected, or if so, how.