i would like to know in order to do a comperssion test on a automactic car, do you do the same thing for manual like remove the spark plug and wires and just crank the engine? or is there a certain electical plug i have to remove for automactics. thanks.

 

same way - just pull your fuel pump fuse, pull your plugs, install tester, press gas all the way to the floor and crank it.

 

oh thanks.
would anyone know the compression points for a 3.0 litters v6?

 

standard - 178psi
minimum - 135psi
max variation between cylinders - 28psi

 

anything more than 10percent change you'll have a problem