Did you drain the gas tank and all lines before it sat this long?
If not do that now and put in new fresh gas to start and run it on twocents
I would probably drain and throw away the oil and filter also and once the new oil and filled up oil filter is installed prime the oil pump and spin the motor over on the starter to lube everything, 4 yrs is a long time to sit without running work

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)