[Bryan1436]

I am going to try both of your suggestions - I do admit that I have never changed the spark plugs/wires (and at 115k miles I probably should). Tomorrow I am changing them out tomorrow (along with the fuel filter). Thanks for the tip of checking for residue on one of the plugs.. I'll let you know how it turns out!

I did notice just recently that my radiator resevoir tank was empty - I filled it up and its lower again. That just might be the problem..