CP4 Pump: Which Diesel Engines Use It And Why Is It So Problematic?
CP4 pumps in diesel engines are notorious for failing and causing major damage to fuel systems. Here is what engines use them ...
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The Most Reliable Duramax Diesel Engines (And Which To Avoid) According To Owners
General Motors' Duramax ... filter (DPF). The introduction of the DPF had knock-on effects on the LMM's overall usability and reliability. For one, active regeneration of the DPF required fuel ...