OK, I pressured washed my car off today, mainly to get the salt and road crap off. The weather today is about 45 degrees. I hosed off the engine very quickly, about 4 seconds, then I reached under the car and hosed off the bottom quickly. I get in my car and take off and my car is running rough and sounds like a motorcycle, my exhaust is in fine shape, could I have gotten water in something that would make my car run like this??? HELP!!!