Here we go again. Its acting up worse this time!

The coolant level is still right where its been.
I cant check the fuel filter, unless I cut it up. It is a solid metal casing.
I have been going out and starting it, and its running pretty good. It might stall once or twice, but runs real good for the most part.
Just it has bluish smoke coming out. Thats the only thing I cant figure out now.