09/24/2026
Water and bad fuel don’t just cost you a fuel filter. They can take out the entire high-pressure fuel system. 💧
Modern common-rail diesels run their high-pressure pumps, rails, and injectors on extremely tight tolerances. Water in fuel, low lubricity, particulate contamination, or bad fuel can damage a CP4-style pump. When that pump fails internally, the metal debris it sheds travels downstream: contaminating the rail, injectors, lines, and the rest of the system.
That’s how one failed component becomes a multi-thousand-dollar fuel-system replacement.
Don’t ignore:
• Hard starting or extended cranking
• Rough idle or hesitation under load
• Loss of power
• Fuel-pressure codes
• Fuel in the oil
• Metal in the fuel filter
• Water in fuel
Early diesel-specific diagnosis and repair is cheap insurance. HMS Auto and Fleet provides light- and medium-duty diesel service, fuel-system troubleshooting and repair, advanced diagnostics and programming, scheduled maintenance, fleet service, and complete gas and diesel repair: including engines, brakes, tires, and alignments.
Our Omaha shop has ASE Master certified technicians, a 19,000+ sq. ft. facility, factory-level software, professional diagnostic equipment, a full parts inventory, and the experience to solve the tough issues other shops can’t. We also offer a new customer showroom built around a better service experience.
If your truck or fleet vehicle is showing fuel-system warning signs, don’t wait for a pump failure to make the diagnosis. Call HMS Auto and Fleet or visit https://hmsautoandfleet.com/.