Thanks for reply.
The choke plate is not closing. I also tried with ignition on.
It seems to be locked in open position, because when I try to
force it closed, it will not move. When I have more time I will
try to see why. It seems to be mechanical, do you agree?
Also Toyota no longer makes the choke coils, so I hear from
local dealer.

 Make sure the choke is working properly. With the ignition off
pump the
accelerator one time. Remove the air cleaner and look at the
choke plate, it
should be fully closed when cold. If not, check to see what is
keeping it
from closing. It is possible for the chole coil to lose it's
tension and
cause this. If that is the problem replace the choke coil.