Engine starting tips

TXaviator said:
is that actually a possibility? (serious question)

no one ever mentioned that before. can you explain the mechanics of how a fire would start above the carb by pumping/varying the throttle?
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Wouldn't happen above the carb, and it's not very likely to happen while you're cranking unless you do it a lot. It usually happens when people pump the throttle before they crank. The carb has in it an accelerator pump that squirts a jet of extra fuel into the intake when you advance the throttle. If you're not cranking it drops back down through the carb and sits in the airbox. If the engine backfires you have a fire in the airbox and intake.
 
minitour said:
I wish my plane would have known that.

-mini
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It's the only way to prime an airplane with no primer, but if your airplane does have a primer system then it's much better anyway.

It's happened so often here that we have labels near the throttle that say "do not pump throttle during start." People still do it :P

Be careful what you teach your students as CFI's, especially if they're just learning to fly for fun, they trust you and they'll do whatever you tell them religiously. Some of these folks if you told them it's tradition to walk around the airplane clockwise six times before getting into it they'll do it. If you ask them why they're doing it they'll say "My CFI said...."
 
TXaviator said:
in other news, instead of cranking with the throttle in a fixed position, i find that if i pump the throttle fairly rapidly while cranking i can usually get it started within 2 or 3 revolutions.... sitting with the throttle in one spot its kindof up to luck whether it wants to start or not...
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engine fire...

EDIT: sorry already said x 10
 
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