Hydrolocking

[GyvAir]

Is there a procedure for the Lycomings for purging the hot fuel/fuel vapors from the lines under the cowl prior to attempting a hot start, similar to Continental's published procedure?
http://www.askbob.aero/sites/default/fi ... 20Care.pdf
Hot start lesson begins on page 4 or 5. The whole booklet is a worthy read though.

[Colonel Sanders]

a procedure for the Lycomings for purging the hot fuel/fuel vapors from the lines under the cowl prior to attempting a hot start

Yeah - flood it. Throttle wide open, mixture in
all the way, boost pump on. No worries about
hydraulic locking now.

Once it's flooded, boost pump off, mixture to
cutoff, throttle open about an inch and start to
crank.

No more fuel is going into the engine. In fact
you're pumping it out. At some point you're
going to pass through a combustible range
and the engine will start to weakly run on the
post-TDC left magneto only.

Get off the key, which will now allow both magnetos
to fire well before TDC - previously, only the left
magneto was firing, either impluse coupling or retard
breaker.

If your timing it right, it will roar into life and you
gently put the mixture forward and pull the throttle
back, and with your elbow, you've got the stick
back so you don't go up on your nose. Turning
on the boost pump can help. The engine will often
nastily bark at you as it is idling hot.

It is very easy to get the airplane on fire when you
are doing this. The flames that shoot out the
intake can be quite impressive. I know of a guy
that burned his bungees off his Pitts S-2B doing
this. Not quite sure how.

Or as I said, go to lunch and let the mother cool off.

Free advice: dump the prestolite, get a lightweight
starter that cranks faster. A good battery helps,
and check the crimped connections on the cable
from the battery to the starter solenoid - make
sure they're good and tight.