i need help! okay so my jeep comanchee '87 6cyl is haveing issues. just yesterday it started running rough and at times it seems to want to die and stutters as if it is not getting any fuel. i don't know too much about fuel systems. if i just let it do its own thing while I'm driving it puts and stutters but then continues driving fine, it does this about every 30sec or so. anybody have any ideas?