1986 Mazda B2000, 181,000 mi

Try the EGR open it up and clean the carbon, then comeback

Try the fuel pump relay if it has one-also check the actual fuel pressure when it dies out it shouldn't lose all the pressure within 10mins. Check your fuel pump connector-

Is your truck and auto or a 5spd?

Changed the hole distributor? You mean the whole thing not just the cap and rotor right?

Check the coil for leakage and corrosion on the bottom of it.

HAs a new gas tank been installed recently?

Cosmo. Mazda TEch

Well then take a look at that coil.

I am also wondering what the condition of the sending unit in the tank is. Sometimes the sending unit gets small pin holes in the lines that cause the fuel pump/ carb to suck air into the lines causing problems.

Cosmo. Mazda TEch

, have tried pouring small amounts of gas into carb when truck dies to no avail.

Your missing spark-otherwise it will fire up when you prime it.

Check for power at +pos term. Of coil-if present-now crank engine over and while a voltmeter or test lite at the -neg terminal-VM or testlite should be fluctuating/blinking-if not check the ignitor-if it is blinking check the rotor, cap, and coil wire and the coil primary/secondary resistances.

Also it might have an external resistor that's inline with the primary circuit.

HTH-Good Luck!