My truck has a hard time starting like there is not enough juice and even jump starting it does not really help any ideas

 

Welcome to FTE. I moved your thread to the appropriate forum so you might have better luck finding an answer. Can you give us a little more info on the truck/problem(engine type, etc).

 

I have a 93 7.3 liter diesel I just replace the alternator on it batteries are supposed to be good alternator is charging but doesn't have enough juice to clean the motor over just enough to crank it up though but once it starts it runs fine hard to jump start it as well

 

If you just replaced the alternator the batteries probably aren't charged up. I would get a battery charger if you don't have one or remove the batteries and have them charged.

 

Sounds like a bad starter. But you might also have glow plug problems.