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Old July 16th 07, 10:23 PM posted to rec.aviation.piloting
Paul Tomblin
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Posts: 690
Default Ok, so how *do* you hotstart your IO-540?

In a previous article, "Dan Luke" said:
"Paul Tomblin" wrote:
[1] Leave the throttle, mixture and prop alone from when you shut down.
Turn on the fuel pump, and crank. When it catches, quickly advance the
mixture to full, and once it stops spluttering lean it out.



Haven't tried that, yet. How long do you leave the pump on?


Until it's started. Because the mixture is still at cut-off, no fuel is
flowing.

Hot start:

Throttle in 1/4" from idle.
Mixture cutoff
Fuel pump on
Mixture full forward until fuel flow just registers (about a long
one-one-thousand)
Mixture cutoff
Fuel pump off
Crank - after about six to ten blades (3-blade prop) it will fire -
immediately come foreward to full rich.

Shorten or lengthen the priming time from one to three seconds depending on
time since shut-down.


That's how I cold start it - the only difference with hot starting is that
I don't do the "mixture full forward until the fuel flow just registers".


--
Paul Tomblin http://blog.xcski.com/
So I was reading Twelfth Night ... and would you believe that the I LOVE YOU
hoax is the exact same trick Shakespeare uses to point out what an arrogant,
self-absorbed fool Malvolio is? -- Julia McKinnell