New member with mechanical problem
 

Hey folks, my first vehicle when I turned 16 was a 1995 S10 2.2 liter. I drove it for many years and then gave it back to my dad when I got another truck. Well, I'm 31 now and he just bought a Tacoma and gave me back the S10, but it has a problem I can't figure out and our local mechanic isn't any help either because he only works on stuff he WANTS to work on.. Here's the problem, when you start it up it is running rough like it's not firing on all cylinders, has no power and skips like that for several miles. Sometimes after it's good and warmed up it will SUDDENLY start running normal, not gradually get better but just suddenly go from running like crap to normal. Can anyone help?