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Message: [QUOTE="DEEZUZ, post: 1536205, member: 1508"] Basically all CP4s will fail, more earlier than others. Basic fuel filter changes cause air to enter system, even with being bled out. Its just a matter of time. Factor in a bad tank of fuel here and there, a gel event, etc. As far as I can tell there was not a single internal update to the pumps integrity in the later years. I cannot think of a single CP4 truck I've had, whether it be a pstroke, dmax, eco diesel that didn't have some sort of metallic flake in the fuel. My advice is to send in a fuel sample or 2 a year along with your oil and check for metal. I tell all my fleets/customers that. The metallic squeaks are definitely referring to the toasted mains. How or why I'm not convinced yet but I've had a few and so has everyone else I've talked to. Last 6.7 engine took Ford 5 months to get me after a back order. Now I've been waiting on another for 1.5 months. Wonder why such a shortage of engines. Doesn't matter as I'm going with Jasper(don't need any input on them, I know more than you do about the product their producing currently) from now on. I'm not here to talk **** guys, I'm here to advise. [/QUOTE]

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