I have the 300 6 in this truck. I just did a compression check and found I have a bad valve on the #3 cylinder.( very low compression) I am going to pull the head and repair it soon, any tips tricks or suggestions are welcome. It looks like a pretty easy job....?

 

It is an easy job, as compared to many other vehicles.

Did you verify that it is a bad valve by putting oil in the cylinder and rechecking the compression?

 

no I havent, how much oil do you recommend that I use to do that test?

 

Two squirts from an oil can.

If the compression comes up substantially, that would indicate bad rings. If it only comes up a few pounds then it is most likely a valve.

Also, to isolate the leakage (compression loss,) you can put that cylinder at it's top dead center position and put compressed air in the spark plug hole. The you can listen to see where the air is escaping. Intake, exhaust or crankcase, the sound should give you a pretty conclusive answer.