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Hot Start No Problem - Idles terrible

azflyer21

Well Known Member
Every Hot start I've done has been after shutdown long enough to fuel the plane. I can get the engine started with no problem, but the engine (IO390) does not want to idle. I'm constantly trying to keep the engine alive. I've pulled back the mixture, didn't help to clear anything up. Any ideas?
 
Have you tried turning the boost pump on to increase pressure and reduce vapor lock?
 
I had this issue...turns out cracking the throttle 1/4 inch during start solved the problem. My idle is a tad lean as at idle, I get no slight rpm rise at cutoff.

R
 
rough idle

If you use the fuel pump should the engine quit turn the pump off immediately and wait a few minutes before attempting restart.
 
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