Opinion, opinions, opinions...
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Let's see, they are "all like armpits, and they all ...." well, you know the rest of this... Actually, there are some good comments here and you'll need to see which of these will work with your engine.
However, in the last 2 airplanes that I've owned and the one that i'm currently flying, the following has worked "every time", ok almost.
HOT START ONLY!
- Mixture full lean
- throttle full closed
- bump fuel pump to do nothing more than "pressure the lines" then off, maybe 1 second on/off
- open throttle 1/4"
- crank over engine to start
- at catch, mixture to full rich
I used to have the hardest time starting HOT. I dreaded it until I learned the above. Now it's no big deal and I'd say I'm about 96% with the above.
Ok, now a couple of comments on the other procedures. IT WILL VARY IF YOUR ENGINE IS A LYC VS. A CONT.
Most, not all conts, have a return line on the fuel system. Most, not all Lyc don't. This means trying to do any "purge" will only work on those with return lines. Purging on one without a return line, especially if the throttle is open is doing nothing more than putting raw fuel into the cylinders (something you are trying not to do on a hot start).
Here's the other trick to all start procedures.... The Second, and I mean the second that your have the engine turning over, grab that big red knob and pull it out an inch or more. In fact, find the spot where if you turn it 1/4-1/2 turn more the engine will quit and then set it at the 1/4" from there spot. leave it that way until mag check and then back to that spot until take off.
Don't worry about take off, you'll know to fix it just fine as the second you add power, the engine will just about stop and you'll realized and fix the mixture.
Do the above as soon as you land as well. All of this will limit the effects of vapor development on the ground, and will also help with no lead fouling. Your engine will like you lots better and you'll be a happy pilot.
So there you have it, yet another opinion
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