300CD Not starting......

Greetings All,

My 80' 300cd is not starting. I came home last night, parked it in the driveway and now nothing. I did a couple short trips out in town and came back home. It is not very cold out here right now maybe into the mid 60's. However, I replaced the glow plugs this morning, checked the relay and it is fine, replaced fuel filters, primed the engine and still nothing. I thought that maybe the battery was going and tried to jump it still nothing. The engines cranks attempts to turn over but that is it. A little blue/white smoke after every couple of attempts or so. No matter how many times I try to crank it over it does not catch.

How would I go about checking the fuel delivery system. The threads here are a little vague to me? Or does anyone have any other Ideas?

Thanks,
Brian