Quote Originally Posted by jjt250 View Post
I don't think I have ever heard something like that then...It'll be -20 with windchill here tomorrow so I'll see if I can hear anything. Maybe one of the guys with this problem could post up a video of the sound to help us understand better.
Mine does it on really cold days before it warms up. I have noticed it 2 or 3 times this season. Don't have to be on the gas too hard but not real light either. Goes away as soon as i let up on the gas and wait for it to wrm up. I don't think it has ever done it before this year, but this is a colder winter than we have had in a while.