the 2T i would suggest to give the starter a tap while another person cranks over the car. Tapping the back of it gives the shaft a little extra help pushing out. Once its started let it really warm up for an hour or so, take it for a drive. Stop, and see if it starts on its own ....? If not ya starter is stuffed
On the other engine, sometimes there's just not enough juice left in the battery, hence you get the clicking cause the starter aint kicking over - try replacing the battery?