I've just installed a new 12V battery and a refurbished starter supposed to be OK.
When the engine is at ambient temperature, as before flight, starting is normal.
When the engine is shut off after flight, and is still hot, it won't restart---the starting revs are then much too slow.
However, when I let the engine cool off for 20 min or so, it again starts normally.
What can the problem be? (My A&P seems to be at a loss and I don't want him to start replacing everything.)
Thank you.