I have a 48" Walk behind with a Kawasaki fb460-v on it, and I left it in the rain for 1 day on accident. It started and ran normal for about 10 sec. then it started taping EXTREMLY loud so ive pulled the carberator cleaned it out. pulled the head off, cleaned it out. It did nothing, and I have no clue where to go from here. Any info would be greatly appreciated.