[TR] Poor idle once TR4A is warm.

[Dachnowicz, Peter]

My 66 TR4A starts and runs great through all gears with no hesitation or lack
of power from 0 to 90.
After about 20 minutes however the idle will drop down to approx 600 RPM and
eventually stall out. (Idle when cold is approx 850)
To remedy this I have been giving a < inch of choke when stopped or just
running lights. Either solution is not optimal.
Where should I begin to troubleshoot?


Thank you

Peter