In article ,
says...


The reason given by the FBO was that the fuel flow meter in "some"
of the injected 172's is either slow to respond or doesn't read
accurately at the aux fuel pump flow rate. And it is easier to
flood the engine using the fuel flow meter. Don't know how true
that is, but the timed method (using a simple one thousand, two
thousand count) is accurate enough.



Tha argument for using the fuel flow meter instead of a timed method is
that you don't know if the pump is primed or not, so the time it takes for
X amount of fuel to be pumped, after you flip the switch, is variable.
Your method though works around this, because you leave the pump ON, and
"dose" the fuel with the mixture control. Sounds OK to me. It's true that
it's very easy to flood these engines, and pilots transitioning from
non-injected models will have more trouble with too much fuel flow than
too little.

G Faris