When I had my engine idleing, I noticed some faint white smoke coming from my exhaust. It wasnt that cold outside(I couldnt see my breath). Then, water came out of my muffler. It was dark like it had soot in it. I called my girlfriends step dad and he told me that the water could be from condensation from the rain last night. But what about the white smoke? It stops when I gas it. The engine runs fine though. He also said that if my head gasket was blown, my spark plugs would start fouling out. Am I worrying about nothing?