"Kyle Boatright" wrote in message
...

If the pump is on, and the mixture control is NOT in ICO, there is
fuel being supplied to the engine, whether the engine is running or
not.

Eventually, it will run down the induction system and out of the
drain/drains that are in place to port it outside of the cowling (and
onto the wheel fairing, apparently)

TC

Once the carb bowl fills, the carb float closes the valve that allows more
fuel in to the carb. This prevents excess fuel from being poured into the
carb and eventually leaking out. The original poster needs to check a
little deeper and figure out exactly where the fuel is coming from. If it
is excess fuel coming from the carb bowl, there is a problem with the carb
float or the valve it controls. Perhaps the carb float has sunk, stuck, or
is improperly adjusted. It is also possible that the valve no longer seats
properly due to wear or some sort of obstruction.

Another possiblilty is a leak in the fuel strainer valve that only
manifests itself with the aux pump on...

Again, there is more investigation to be done.

KB


The 172SP uses the IO-360-L2A which is fuel injected....i.e no carb bowl.

TC is correct. If the aux pump is "on" and the mixture is not in ICO then
fuel will eventually run out if the prop is stopped.

J. Severyn
KLVK