Gas and diesel fuel filter replacement, including water-separator service and diesel system priming.
Schedule a Fuel Filter Service6.7 Cummins: primary (water separator) every 15,000 miles, secondary every 30,000 miles. 6.7 Powerstroke: both filters every 15,000–22,500 miles depending on model year. 6.6 Duramax: 15,000–22,500 miles. Severe service (biodiesel, dusty/dirty conditions, frequent short trips): shorten the interval. Never skip the water separator drain.
Contaminated fuel reaches the injection pump and injectors. On modern high-pressure common-rail systems, this causes accelerated wear or catastrophic failure. On 6.7 Powerstrokes with Bosch CP4 pumps, a failed pump can destroy the entire fuel system. A filter service costs $80–$200. The repair it prevents can cost $8,000–15,000+.
Stop and drain the water separator as soon as safely possible. The WIF sensor indicates water has accumulated in the separator bowl — if you continue driving with water in the system, it reaches the injectors and causes corrosion. Bring it in for a separator drain and filter change.
Air is introduced into the fuel system during filter replacement. If the engine is started without priming, the injection pump and injectors run dry for the first few seconds — which accelerates wear on every component in the high-pressure fuel circuit. Proper priming purges air before the first start. It’s a critical step.
It depends. Many older gas vehicles have an accessible inline fuel filter that should be replaced every 20,000–40,000 miles. Most modern gasoline vehicles have an in-tank strainer that’s not routinely serviced — it’s replaced with the fuel pump. We’ll check your vehicle and tell you what applies.
Yes — diesel and gas, Powerstroke, Cummins, Duramax, and all other makes. Hillsboro, Beaverton, and Portland metro.
Honest service, transparent pricing, and a 1-Year/12,000-Mile warranty on every job.