Vapor lock comes in varying degrees, so a single technique to purge the fuel lines of “gas air” won’t necessarily work. I break it down by short heat soak (about 10 min or less) and long soak (about 30-60min) and yes, there is that charlie foxtrot area in the middle ~15-30 minutes where anything can...
I have an 1986 M20K 252 and pretty proud of it.
But I do have a problem with the engine that I can by now almost predict on hot days.
After the plane has sat all day in the sun it will start up very nicely but when applying take-off power the engine will quit.
If I put on the low boost pump...
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