after getting good and warm when I stop and try to start it's ok. If I wait about 20-30 minutes it tries to kick, but wont. Waiting around 30 minutes it will start. .Parts changed= plugs, wires, cap, rotor, coil, and idle air control valve. Haven't change the fuel filter.
Any help would be appreciated

 

Likely a fuel system problem. Fuel pump going south perhaps.If it's original, 274K is a great long life.

 

Pump replaced about five years ago. Truck doesn't seem to starve for gas runs great, idles good, just when hot for 30 minutes it won't start. I think the fuel filter is the last thing I can think of

 

Could be the fuel pressure regulator. Yeah, I'd put a new gas filter on it.

 

I'll check the regulator and definitely replace the filter.
Thanks very much for you tips