95 mazda 2300 truck will crank but won't start sometimes.
If you get it running its fine till you turn it off.Then it mit start or it mit not.Then it mit start a few minutes later or not start for two days.We have changed computer,starter and a bad belt.Now we have put gas right in carb but no help.Any suggestions??

. Replace the Ignition Control Module (ICM) and coil pack.

. Replace plugs, with the exact ones that came in the truck, if they are over 3 years old.