I bought this truck with 85000 miles on it. When going up a hill or merging onto the highway I have seemingly very little power to stay at a constant speed. I realize it's a 4.6 in a 5000lb truck but come on. When I merge on the highway I get a vibration, slight, almost like being on a small rumble strip around 50 miles an hour. It just doesn't feel right considering it doesn't do that any other time. Also, when I warm up my truck I get a raw gasoline smell in the cab and when I pop the hood I can smell it above where my plugs are and where I can see my vents run into the cab on the passenger…
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