Slant 6 wont start

Alright.
Well I just pulled the first plug. Its caked with burnt oil. Black burnt powder coating the whole surface.
Also, where I'm supposed to turn the crank it is filled with dirt and grime so I'm gonna get that cleaned out right now. Anyone know the exact size socket that will fit on it?
Secondly, what is the burnt oil telling me?
Thanks for the help.
I'm not a "slant six" man but THIS SMACKS OF TIMING

Before you change ANYTHING,

Pull the distributor cap. Move the front pulley/ balancer back and forth to "feel the slack" and move it until the rotor just starts to turn, and NOTE how far the balancer moved. This will give you some idea of slack in the chain
What do you mean by feel the slack and what rotor is turning?

Bring the timing marks up to "where you think" you want the timing, I.E. say, , If the rotor is NOT pointing close to the no1 plug wire tower, rotate the crank ONE turn, and bring the marks back up where you had 'em.

5-8 BTC... whats that?