1993 Mazda 626 v6 help me please

[SuperMazda]

Hey, i have a 1993 mazda 626 v6, and its really odd, because, it runs ok, starts up ok, then i go for a ride about 5 mins driving then all of a sudden it acts like its running out of gas, then when i stop, it keeps trying to quit like its running out of gas even more but it usaly dont quit, sometimes it quits...

also sometimes i will turn the key, then it will not even start up or sound like its trying to start, then i try it again, and it starts right up..

if anyone can help me please & thank you very much