85 cutlass supreme starting issues!!

Ok , I just aquired an 85 cutlass supreme v8, 52,000 orig. miles.
When I start the car for the first time every day the engine has a major miss. It will shake for about 30 seconds, really wanting to stall, and then it smooths out and all is fine. During the first 30 seconds the exhaust coming out of the tail pipe has a blueish tint to it. Checked all plugs and wires, everything is fine. I was told I may have water leaking into one of the cylinders and the test for that was to pull all of the plugs and see if 1 was cleaner then the others, which would indicate water contacting the plug. All the plugs had the same normal wear.
I then did a cylinder pressure check and all was good ther too???

So what should be my next move????

Thanks for your help in advance!

Could be a few things here.
Might be your choke isnt set right, could be the dwell or timing is off.

Could be its just time for a tune up, new plugs/wires/cap/rotor.

I'd also replace your fuel fitlers. :thumbsup:

hope that helps