i cant figure it out. the truck stalls at unwanted times otherwise it runs
like a charm. it will sometimes start to chug and stall or it will just
stall right away. it will either
start up right away or it can take up to a couple of hours but it will
always start right back up when it wants to. sometimes if i fiddle around
with a few things under the hood like switching the coil wire with
another
coil wire  or any other wires sometimes it will start up. i have replaced
all thte following parts. ignition coil, spark plug wires, coil wire,
fuel
pump, fuel filter, distributor cap and rotor. please give me a few
different leads as to what it could be if you can cause it is getting
very
irritating, it has been happening for about six months now. thank you