after driving a bit when weather is hot it drops a lot of power, chokes, bucks badly on 1990 Ford F-350

1990 Ford F350 w/ 460 Fuel injected engine. after driving a bit when weather is hot it drops a lot of power, chokes, bucks badly. the fuel filter is new. there is no catalytic converter & there are no vacuum leaks. very frustrating please help?

by in Harrisburg, PA on April 06, 2010
3 answers 1 comment
ANSWER by , April 06, 2010
first thing i would try is a fuel filter. if that does not work, have the fuel pressure checked. Roy
ANSWER by , April 06, 2010
Also check for vacuum leaks!
COMMENT by , July 22, 2013
We all ready done this to the truck and it is still choking we checked fuel pressure check check vacuum leaks
ANSWER by , August 15, 2014
My F350 1994 pretty much poops out above a 100 degrees. It is a vacuum lock in the fuel line I am sure because as soon as the weather cools down a bit it works fine. I was told that a "fin" could be installed around the fuel line prior to entering the carburetor to help keep it cool,but have not tried it.