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Message: [QUOTE="HS-MotorsportsDallas, post: 1474769, member: 19010"] I know you already did but, for anyone else reading, make sure your PCV (pressure control valve) on the back of the driver's side rail is in good working order. They tend to load up with tiny pieces of debris inevitably shed by the CP4 and get stuck partially open which creates a lot of heat by allowing fuel to bypass it when it shouldn't and forcing the pumps to work double time to keep up. It's also the reason for the "large fuel leak" code. Everyone things it's an external leak when it throws this code but 99.9999999999999999999999% of the time this code pops up, it's because of that regulator. I replace the PCV on every truck I do a dual fueler on since I'm there anyway and that way I know it's fresh. I've yet to see hot fuel temps in anything I've dealt with, including my own truck. [/QUOTE]

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