synjn

I have to take out my spark plugs once a week and dry em out. Wait for cylinders to air out, then put back in starts right up. Was thinking possibly leaky injectors dripping fuel into cylinder after shutoff, but how could all my injectors go bad all at once.
I put a new "idle/air control valve in" solved the sputtering from idle but plugs still fouling.
When the engine is warm, starts no problem. cold start is the problem. Also having some weird cooling issues. How do i test if coolant is leaking into cylinder. then again, how could there be a gasket leak in all 4 cylinders at the same time. unlikely.
Any thoughts?