First off ...87 300zx ... I know its the first question....Its blowing white smoke out the pipe.. not so bad you cant see.. but,it is there... He says it randomly dies out after running down the road five ..ten min or so... I've let it run for what seems like forever in my barn.... It does have a miss in it (very slight) yet, has never died out. I have checked the codes on it and, Im getting 11... (crank angle sensor) this is kind of disturbing... I have pulled the distributor checked the cas and, the volts to it... everything looks good ... Im thinking of running a can of sea foam through this bi&$ch ... All I can think of is, maybe this sucker has a stuck valve.. not really sure.. Question is what would you do?

Not a turbo ... acutually its a canada model .. Which is kinda new to me ... he wants to trade for my 80zx

compression test (leakdown if possible), coolant system pressure test

I have checked the codes on it and, Im getting 11... (crank angle sensor) this is kind of disturbing... I have pulled the distributor checked the cas and, the volts to it... everything looks good ... Im thinking of running a can of sea foam through

Sea foam will not fix a CAS, and even if it does have the correct Voltage, that doesn't mean it's good. I had one just go out, and i had to replace it. It's not hard to do. Find one in the yard if you can't afford a new one.