I have an 87 Toyota P/U 4X4 with the 22R engine and 5 speed. When its cold it starts hard and spits and sputters, coughs and you get the idea, until it warms up and you shut it off. After 3 or 4 minutes you start it again and it runs as smooth as a kitten purrs. I have blocked off the choke but that didnt help, removed a "filter" from the diaphram but that didnt help. Was going to replace carg but cant afford gold and same with choke. New choke doesnt come with diaphrams. Does anyone have a clue as to whats wrong and how to fix it? Thanks