Hi,
around or above 30C/90F the carb bowls are drying out, even the fuel filter is empty.
It happens even in a 20 min coffee stop.
Happens also when the bike placed in shadow.
But starts without hesitation after priming for a while when tank is full, or cranking when it is not so full.
No gasoline on the engine or around, under it.
Petcock is fine, is closed without vacuum.
european carbs
Tried to ask google, but not found even a relevant question on it.
How common it is?
for me it is really frequent
thanks
zoli