Trouble shooting dosent start turns over ok good battery.

check fuses and relays --try starting with ether /starter fluid it start fuel problem --check dash for security mode you didnt specify vehicle some allow to crank but not start--test fuel pump and relay --if no start -look at problem with coils-ignition wiring

im not sure what the model of your car is but it sounds like the same issue i had with my impala. It has to do with the security system failing. I found a part that i put in 5 years ago and to this day i havent had an issue with it starting since. So check this out i hope it helps ya. Good luck Do It Yourself GM Security bypass

The battery dies after sitting for a few hours ? Parasitic drain on the battery ! With the key off all fuse's shouldn't be hot ! Bad ignition switch . Find a wiring diagram at www.bbbind.com an check power at ignition switch . Look on you tube , a lot of videos on basic electrical trouble shooting .

I had a similar experience and I had to replace the PTO.
What size motor do you have and what brand is it?

Ok make sure all around you is quiet, have someone turn the key all the way on then wait 2 sec then turn off and repeat process while you lay on the ground by the fuel tank listening for the loud humm of the electric fuel pump. I do believe you may not hear a sound if you hear nothing comment right back we will trouble shoot your problem. But for now lets check fuel pump for operation at all thanks.

ok a lot not said here trouble shooting time. does the battery have a full charge "no" put a charge on it. battery wont charge and still wont do a thing dead battery get another one. ok battery charged and all works undo the positive cable on battery, if it still runs "good" if not alternator is bad. hope this helps not much to go on

Take the starter off for testing. If the lights were normally bright, and went dim when key was in cranking position, it means the start circuit is working-battery power is going to the starter, but it won't do anything. The starter motor is probably bad.
Good luck.

If the starter solenoid just clicks,the starter is the most likely problem,replace it to solve the problem,if this was helpful,please rate,thank you.

Aside from checking fuse, run a wire from the (+) side of the battery and connect it directly to the motor terminal. This will tell you if the motor is good. Make sure that the motor case has a good ground. If motor is good, check blower relay and resistor block. (likely not the problem but needs to be checked ) Dash controls can go bad but unless the speed switch feels strange, likely it's OK.
If you find that the fuse has blown and after replacing it it blows again, don't put a larger fuse in...the motor is drawing too much and needs replacement in that case.