f100

how can i get the motor to turn when it is locked up it has been seting up for a while when it was parked it was runing good

Try a little pb-blaster down the plug holes and working the crank back and forth with a breaker on the crank.

use desiel fuel and power steering fuild mix it together and put in each spark plug hole. in a week turn a half a turn add more wonder lube and repeat agin in the next week you will have to do this many times but it willl free it up. this should work i have done it many time in the past on differnt egines at home on the farm .

I've use transmission fluid in the cyl. let it sit for 2 days and it freed up. :2cents: