My 1972 FJ-40 Cruiser has an incredibly obnoxious overheating problem.
The thing is, it overheats after you shut it off. I’ve tried just about
everything — flushed the radiator with chemicals, backflushed the system
through the engine drain plug and radiator draincock, and hosed out the
cooling fins on the radiator (there wasn’t any dirt in there anyway, but).
That didn’t do it. Switched to a 180 degree thermostat, checked to
make sure she wasn’t running too lean, changed the oil. Still a
problem. In otherwords, I’m tapped for ideas. I figure if it’s not
overheating while on the road — but boils over just a minute after you
shut it off, and stays damned hot for a long time — something’s causing
a hot spot in the engine that the coolant flow takes care of while
running, but can’t get knocked down when noothing’s moving.
Oh, when I try to start it immediately any gas I pump goes down the
carb and comes back up 3 seconds later in a cloud of smoke — evaporated
or burned off, I dunno.
Any ideas?