FWIW, the cold start procedures in your POH differ from the procedure in mine.
However, it sounds like the hot start procedures are the same.

As to your question about where the engine gets its fuel to hot start ... Even
though you killed the engine with the mixture control, a bit of fuel will still
leak out of the injector lines and into the intake after the engine is shut
down. That is usually *more* than enough to start and run the engine for a few
seconds. In fact it's enough fuel that the engine will flood if it's hot and
the mixture is set rich.

Hot starts on FI engines are problematic. On mine, I almost always (but not
always) get it to light off and run using the POH procedures (throttle at fast
idle, mixture cut off, no boost pump, crank until start, enrichen mixture).
However, some of my Musketeer bretheren with the same Lyc. IO-360 have better
luck with intentionally flooding the hot engine using the boost pump and
mixture control before starting. Then they use the procedure for a flooded
engine. I have once or twice resorted to this when I couldn't get a hot start
with the normal POH procedure.

Also FWIW, I really don't like fuel injection on airplane engines. Sure it's
great not to have to worry about carb heat. But instead I worry about hot
starts and plugged injectors. As far as the "advantage" of quicker throttle
response for FI, I say big deal. Your supposed to throttle up gently on all
engines, so I just don't see FI as an advantage here. Still, the Lyc IO-360
seems to be a pretty good engine and it and I have come to an understanding
about hot starts.

Best regards,

Steve Robertson
N4732J 1967 Musketeer Super III

wrote:



The POH is very specific about cold starting: The auxiliary fuel pump
should be turned on and the mixture control pushed in until you see a
rise in the fuel pressure, then the pump is shut off and the mixture
control returned to idle cuttoff.

The POH states that if the engine is hot, the auxiliary fuel pump is
NOT to be used.

Consequently, hot starts are extremely problematic and I can see why:
you are trying to start an engine that was shut down by pulling the
mixture control to idle cuttoff, which starves the engine for fuel,
then trying to restart it with the mixture control in exactly the same
position. Where does the engine get it's fuel to run under those
circumstances? Some people suggest that the POH should be ignored and
the fuel lines primed as per cold starts.

I'm just asking. I'm always ecstatic when I find that the engine is
cold because I know it will start right up using the cold engine start
procedure. Hot starts....

Corky Scott