First when I start my truck it start's idling ruff like a miss fire. Once it warms up some it kind of smooth's out. Second I have no power like if I have a 4 cylinder trying to move this truck. Last when stepping on the brakes I have to push hard all the way down, they seem not to be working properly. I'm thinking it might be a vacuum leak or my timing don't know maybe someone can help me out
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