Hot starting Lycoming engines is an art, not a science.
If the shut down has been less than five minutes, as it might be when I have just stopped at the pumps for gas, Maggie will usually start just by cracking the throttles and spinning the engines. No prime what so ever. If it has been longer, then I try a quick blip of the boost pump just to push the vapor out. When that doesn't work, I go to Zach's plan, which is to flood the engine so you have a known point.
In my experience, each airplane is a bit different, but eventually you will figure out what your airplane wants.
Kristin
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Hot Starts on Twin Comanche
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Hot Starts on Twin Comanche
by Scott Ducey » Tue Jun 10, 2008 1:22 am
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Scott Ducey - ICS member
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Zach Grant L1011jock - Technical Advisor
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Here's the check list that I use for hot starts on my Twin
by MULEFLY » Wed Jun 11, 2008 12:53 pm
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by Zach Grant L1011jock » Sun Jul 06, 2008 12:51 am
Last edited by Zach Grant L1011jock on Sun Jul 06, 2008 12:24 pm, edited 1 time in total.
"Keep it above 5 feet and don't do nuthin dumb!"
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Zach Grant L1011jock - Technical Advisor
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by steen » Mon Jul 21, 2008 4:12 am
2 kinds of poppin' goin' on. Important to know which you got.
Sharp pops while idling(backfire) is too lean so enrichen the idle mixture.
Soft pops while idling, or especially while at idle on the landing,(afterfire, or ignition of raw fuel in the exhaust stacks) is too rich, so lean out the idle mixture a bit.
Backfire is being used in the discussion as either lean or rich, but a backfire comes back thru the induction system and indicates a lean condition and gives a much sharper pop than a softer afterfire from being too rich.
Steen N7997Y
Sharp pops while idling(backfire) is too lean so enrichen the idle mixture.
Soft pops while idling, or especially while at idle on the landing,(afterfire, or ignition of raw fuel in the exhaust stacks) is too rich, so lean out the idle mixture a bit.
Backfire is being used in the discussion as either lean or rich, but a backfire comes back thru the induction system and indicates a lean condition and gives a much sharper pop than a softer afterfire from being too rich.
Steen N7997Y
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- ICS member
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