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104 Posts
Yesterday I was out in the Jeep and it was running maybe 4 hours constantly, mostly at idle through one of the WMA closeby. As I was comming home, there was a strange humming sound coming from the rear of the Jeep ('91 YJ, 6cyl, 5 sp) I know both the gas tank and the rear differential have a breather, now wondering if maybe it's plugged somehow ? Where is it and how do I tell if it is plugged ? Also, if that can't be the humming, what could it be ?