might want to check either the full pressure or the fuel filter. i had that problem on a cold engine start not cold weather but cold engine and i had white smoke and really rough running. changed the fuel filter has not done it since.
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1997 Dodge Ram 2500 4x4 12 valve 5 spd patriot blue full replacement bumpers fabtech leveling kit 35" dick cepeks 4" turbo back straight BHAF silencer ring mia PUMP IS JIZZIN OUT ALL IT CAN