I have been having some problems with my 1990 4x4 pickup for a couple months now. I will do my best to describe the problem, and would appreciate any input from you.

The truck was completely reliable until the end of deer season - sometime in december and then it just wouldnt start. It cranks over fine but will not run. I installed new plugs & wires, and starter in the fall. Now it will work sometimes and not sometimes. Most recently it ran for about 2 weeks straight and then refused to start.

Any suggestions? My roomate thinks it is the fuel pump, and if it is how hard is it to replace a fuel pump?

thanks, David

edit- it is a 4 cylinder 22re