On cars with an old carburettor system, this is normal if it is shut down when the engine is still hot because of fuel afterboil (boiling after the engine has stopped) in the carburettor float bowl
. Also, if you have attempted to start the car and failed a few times, it could be that the engine is 'flooded' with petrol.
The float bowl
keeps a reservoir of fuel in the carburetor; the float maintains the fuel level in the float bowl
And we've seen reports of ice inside--and blocking--a carburetor float bowl, ice interfering with other control cables, and ice causing trim issues and control-surface damage.
* Use an engine pre-heater on the engine compartment to raise temps enough to thaw any possible ice in the carburetor float bowl, gascolator, fuel strainer and the like.
Freeing lines, filter, carb float bowls or fuel strainers of frozen water is every bit as big an imperative--but not as easy as draining the sumps.
To use the South Wind the car's engine had to be running, so gasoline could be pulled from the carburetor float bowl
into the heater oven.
That will lower the height of the float bowl
and reduce the fuel flow until the flame is light yellow or white and the heater stops smoking and pulsing.
Although the teams at that level can afford machined aluminum components, Krup, when looking into doing some work for the grass-roots Dirt Late Model and UMP Modified oval track classes, determined that there was a definite problem--the fact that when you're turning left at speed for practically a whole race, the fuel is pushed to the right side of the carburetor's float bowl
, thereby almost starving the jets for the left side of the engine.
Dealing with its maintenance is the familiar nuisance of dealing with stuck float bowls
, chasing fuel leaks and doing preventive rebuilds.
There was also water in the float bowls
of both carburettors.