2018 Ford F-350 SD fuel system problems

Filed Oct 15, 2026 · Fuel system · WI

I request that the federal safety agency investigate potential safety risks associated with the Bosch CP4 high-pressure fuel injection pump in the 6.7L Power Stroke diesel engine used in my 2018 Ford F-350 Super Duty. My truck has approximately 148,000 miles. I purchased it used and am concerned about potential catastrophic pump failure, sudden engine power loss, fuel-system contamination, and substantial repair costs. A CP4 pump failure can release metal debris into the fuel system, potentially damaging injectors, fuel rails, lines, and other components and requiring extensive repairs. Sudden engine power loss while driving or towing could create a serious safety hazard, particularly on highways. I understand that certain vehicles from Ford and other manufacturers have been subject to recalls or safety actions involving CP4 high-pressure fuel pumps. I ask the federal safety agency to determine whether those actions involve the same or substantially similar pump design and failure mechanism as the pump installed in my 2018 F-350. Please review available failure data for 2018 Ford F-350 trucks equipped with the 6.7L Power Stroke diesel, evaluate the risks of fuel-system contamination and sudden power loss, and determine whether existing investigations or recalls should be expanded to include this model year or other affected vehicles. I request that the federal safety agency investigate whether this potential defect presents an unreasonable safety risk and require appropriate corrective action if a safety defect is identified. Owners should not have to wait for a potentially dangerous failure and extensive fuel-system damage before this concern receives adequate investigation. Vehicle: 2018 Ford F-350 Super Duty Lariat Engine: 6.7L Power Stroke diesel Approximate mileage: 148,000 miles Pump status: No confirmed pump failure reported. Thank you for reviewing this safety concern.

Filed Aug 7, 2026 · Fuel system · CA

Our 2018 Ford F-350 Super Duty diesel with the 6.7L Power Stroke engine has a well-known, massive fuel system concern involving the Bosch CP4 high-pressure fuel pump. This pump failed and it sheds metal shavings throughout the entire fuel system. Repair cost $13k. Per other consumer and google results: The CP4 Fuel Pump Issue. The Defect: The Bosch CP4 pump is designed for European diesel fuel, which has more lubrication than American diesel. When it lacks sufficient lubrication, it can score itself and self-destruct. The Damage: Metal debris floods the fuel rails, lines, and injectors, requiring a complete replacement of the fuel system components.

Filed Mar 14, 2026 · Fuel system · FL

My wife reported a strong smell fuel in the passenger compartment of my 2018 F350 6.7L Diesel vehicle while returning home from work. Upon inspection under the hood when power was turned on I discovered a strong stream of fuel from the filter cap.

Filed Jun 23, 2025 · Fuel system · 138,000 miles · CA

The contact owns a 2018 Ford F-350. The contact stated while driving 50 MPH and coming to a stop, the vehicle stalled in the middle to the road. There was no warning light illuminated. The vehicle failed to restart and was pushed to side of the road. The vehicle was towed to the dealer, where it was diagnosed that the high-pressure fuel pump had exploded, causing metal shavings intrusion in the fuel system. The dealer determined that the entire fuel system needed to be replaced. The vehicle was in the process of being repaired. The manufacturer was notified of the failure and referred the contact to the federal safety agency Hotline for assistance. The failure mileage was approximately 138,000.

Filed Feb 15, 2025 · Electrical, Engine · CA · fire · 2 injuries

Unknown component that failed. Suspicion, the fuel system located at the back of the fire wall on drivers side. The fire started in that location and was extremely hot and fast moving. The truck was fully engulfed within 1.5 minutes then burnt the attached 5th wheel trailer and contents. It was a total loss of 3 vehicles 2018 Ford F350, 2021 Dutchman Voltage 5th wheel trailer, and a 2013 Polaris RZR side by side UTV. All was reduced to rubble within 15 Min. Our safety and lives were at risk, we had 30-45 seconds from smelling and seeing smoke to flames. We were traveling on Interstate 15 at highway speeds and had to stop as safe as possible on the shoulder of the road. The vehicle has not been inspected as far as I know, the frame is all what is left. There were no warning lights and all gauges read normal,

Filed Jan 13, 2025 · Fuel system · 125,000 miles · AL

The contact owns a 2018 Ford F-350. The contact stated that while driving at an undisclosed speed, the "Engine Power reduced" message was displayed on the instrument panel before the vehicle lost automotive power. The check engine warning light was illuminated. The contact stated that the vehicle was previously towed on several occasions for the failure and the fuel system was replaced. The vehicle was recently towed to a dealer where it was diagnosed and determined that the fuel pump needed to be replaced. The vehicle was not repaired. Upon further investigation, the contact related the failure to the federal safety agency Campaign Number: 24V957000 (Fuel System, Diesel). The manufacturer was not made aware of the failure. The failure mileage was approximately 125,000.

Filed Nov 16, 2023 · Engine, Fuel system · IA

This issue is connected with the 6.7L diesel engine. When sitting and idling it starts to idle really fast and the exhaust has an odor and strong fumes. It did not use to do this. I took to my Ford dealership and they say it's normal and there is nothing wrong. I have talked with other people that own the Ford diesel and they have experienced the same issue and been told the same thing by their dealership. No warnings or anything come up when the vehicle does this. If you enter the vehicle and touch the brake or accelerator it will then idle back down.

Filed Mar 25, 2023 · Fuel system · CA · fire

The fuel filter under the engine began leaking diesel fuel on the hot engine which ignited a fire.

Filed Mar 23, 2023 · Fuel system · 160,000 miles · NC

The contact owns a 2018 Ford F-350. The contact stated that while operating the vehicle, the odor of diesel fuel was present inside and outside the vehicle. Upon inspection, it was discovered that the diesel fuel was leaking from the fuel filter inside the engine compartment and onto the ground. The cause of the failure was not yet determined. The local dealer and manufacturer were not notified of the failure. The failure mileage was 160,000.

Filed Aug 2, 2021 · Fuel system · IN

I developed a diesel fuel smell coming from under the hood. They traced it down to the engine fuel filter on top of the engine. The filter housing is made of plastic. The filter housing failed and the top came loose/cracked spewing fuel all down the drivers side of the engine. I was afraid it cause a fire and was able to get it in to the dealership. Because it's considered a " wear / replacement item " they charged me for it. My issue is if the housing failed with no distress from an outside source, why isn't Fird addresing this issue? Obviously the integrity of the top fuel filter is in question and should be considered a serious safety concern!