View Single Post
Old 19-11-06, 04:26 PM   #24
Grinch
Guest
 
Posts: n/a
Default

Quote:
Originally Posted by northwind
Quote:
Originally Posted by scooby2102
Dont really think additives are good value, especially in this country since to get petrol to freeze we would need ambient temps of approx -70C
Carb icing isn't caused by low air temperature, but it's made possible by moist cold air... It's caused by the pressure changes in the carb. The venturi raises the air speed without raising the volume, which lowers its pressure and, as per Boyle's Law, the temperature. You don't tend to get carb icing at significant minuses, since there's not enough moisture in the air to do it.

Oh yes, it's also not caused by the petrol freezing.
I noticed when its foggy at about 3-5 C is when its worse... below that the problem goes away.
  Reply With Quote