I have a 1995 F150 4x4 4.0. It has always run great. Lately It's been hard to start. It stumble and wants to die, but once it starts it runs great. I have gone thruogh and done a complete tune up. Plugs ,wires new cap and roter, due to some codes Map sensor and fuel pressure reg\ and fuel/air filter. I've check for vacuum leaks, none. The thing that has got me baffled is it runs great once I get it fire on all 6. Any ideas would be appresiated.
Biodawg

 

Welcome to the site....

I moved this to a spot where you might get more answers.

 

It might be losing fuel pressure when it sits. Try turning the key (without starting) until the pump primes. Turn off, prime again - 2 or 3 times. Try to start after that, and see if she fires first time.

This is not a solution, but will help figure out which direction to head from here.

 

watch your fuel tank levels. might have crossfilling / bad fuel pump. from what i've read on here (and now think i'm experiencing), they're junk. You can try higher octane and some fuel additive...