Ford F-250 SD misfire problems

Filed Oct 28, 2026 · Engine · FL

The engine started misfiring and running rough while driving down the highway. Without any notice or symptoms, power was lost, and the truck was unable to accelerate. After pulling over and parking, it would not restart. Step one Ford in Crestview Florida diagnosed the engine as having lifter/cam failure. Remedy is engine replacement. This truck has the same engine and failure that the federal safety agency opened an investigation into (NBTSA dp26011) Truck has the 7.3L gas engine.

Filed Oct 26, 2026 · Fuel system, Transmission · LA

My vehicle has been at Ford of Harvey since 8/31/26. Dealer replaced ignition coil 8/18/26. Light and rough idle returned and the dealer determined a new engine would be needed. Dealer says Ford warranty only wants to replace cam shaft. Metal in oil was found and dealer has fought corporate warranty for over a month, ripping apart my engine. The fear is engine could seize at highway speeds as a result of internal damage.caused by circulating debris. Truck still sits at dealer.

Filed May 15, 2026 · Engine · MS

Lifter failure causes cylinder to misfire resulting in loss of power while towing. Defect causes catastrophic failure to the engine.

Filed Mar 6, 2026 · Engine · 70,000 miles · NY

The contact owns a 2022 Ford F-250. The contact stated that while driving on several occasions at various speeds, the vehicle was driving sluggishly while accelerating, the RPM fell, and the vehicle lost motive power. The check engine warning light was illuminated. The vehicle was taken to a dealer and was diagnosed with engine failure. The contact was informed that the engine needed to be replaced. The spark plugs were replaced, and a tune-up was performed; however, the failure persisted. The vehicle was then taken to an independent mechanic to be diagnosed. The contact was informed that there was a misfire coming from the engine and that the ignition wires needed to be replaced. The vehicle was repaired, but the failure persisted. The manufacturer was notified of the failure. The failure mileage was approximately 70,000.

Filed Jun 23, 2025 · Engine · 80,000 miles · OK

The contact owns a 2022 Ford F-250. The contact stated that while driving at an undisclosed speed, the check engine warning light illuminated. The vehicle was taken to an independent mechanic, who determined that there was a misfire in cylinder #2. The contact was informed that the vehicle needed to be taken to a Ford dealer for assistance. After investigating the failure, the contact related the failure to Customer Satisfaction Program: 24B25. The manufacturer was notified of the failure, a case was opened, and the contact was referred to the federal safety agency Hotline for assistance. The failure mileage was 80,000.

Filed Jun 3, 2025 · Driver assistance, Engine · TX

Engine making noise and has misfire

Filed Dec 11, 2024 · Engine · TN

Subject: Urgent Safety Concern Regarding Rocker Arm Failure on My Truck I am writing to formally express my concern regarding a critical issue with the rocker arms on my 2019 Ford F250 6.7L Diesel which has caused significant safety concerns. I believe that the failure of these parts poses a serious risk to both the driver and others on the road. Recently, I experienced a failure of the rocker arms while driving. This unexpected breakdown caused engine misfire, loss of power, and unusual noise and severely impacted the performance of the vehicle. It is concerning that such a vital component could fail under normal driving conditions, compromising the engine’s functionality and potentially causing complete engine failure. The failure of the rocker arms is not only costly in terms of repair but also represents a significant safety hazard. Should the issue worsen while driving, it could lead to sudden loss of power, stalling, or even damage to other critical engine components, putting the driver at risk of an accident. This danger is exacerbated if the failure occurs while driving at high speeds or in hazardous conditions. I strongly urge you to investigate the underlying cause of these failures and provide a resolution as soon as possible. Given the serious safety implications, I request a prompt response with information on how this issue will be addressed, whether through a recall, repair, or replacement of the defective parts, and a review of any related safety concerns.

Filed Sep 13, 2024 · Transmission · OH

What component or system failed or malfunctioned, and is it available for inspection upon request? The Variable Displacement Oil Pump delivers oil to the engine at low pressure/capacity during idle conditions. Routine occurrences of prolonged idle time may result in excess wear to the engine camshaft lobes and valve tappet surfaces due to reduced lubrication. Overtime, the engine may progressively run rough due to cylinder misfire. Additionally, customers may hear engine tapping noises and the Check Engine Light may illuminate. This causes delamination of the lifters and camshaft which sends metal throughout the engine causing total engine failure and this requires a completely new engine. How was your safety or the safety of others put at risk? Beyond the financial implications, A sudden breakdown on a busy road can lead to dangerous situations, putting both me and other drivers at risk. Additionally, driving a vehicle with a compromised engine can result in further damage and potentially cause accidents. Has the problem been reproduced or confirmed by a dealer or independent service center? Yes there are many forums and videos online about this issue in the 7.3 Godzilla engine produced by ford. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? My vehicle is currently at the dealership for repairs which they said they are unable to do so I will be taking it to another dealership next week. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? In my vehicle there was no CEL but in other customers vehicles the CEL will appear if the problem is not caught soon enough.

Filed Oct 29, 2021 · Electrical · 9,200 miles · WY

The contact owns a 2020 Ford F-250. The contact stated that while operating the vehicle, the engine began to sputter and misfire with the check engine warning light illuminated. The vehicle was taken to an independent mechanic who diagnosed that the spark plug wires were faulty and needed to be replaced. The spark plug wires were replaced with the manufacturer’s OEM wires however, approximately three months later the failure recurred. The mechanic installed the new improved spark plug wires ordered from the manufacturer and the failure was remedied. The local dealer and the manufacturer were contacted and made aware of the failure. The failure mileage was 9,200.

Filed Nov 17, 2020 · 23,022 miles · DC · fire

See attached sf91 from driver/witness. Also: 1. Is there a fire report? The memo stated the fd was notified. A. Fd was notified and the fd did show up to put the fire out. I have spoken with the deputy director with the fd aboard cp and the emergency data system cannot be accessed nationwide. They are doing report manually at this time. No fire dept report can be accessed at this time. 2. Events preceding the incident. Was this the first attempt(s) to start the vehicle that day, or was this subsequent to being used earlier (it appears it was the first attempt)? Did the vehicle exhibit any "hard-to-start" tendencies before this incident? Have any operators noticed anything wrong or unusual; smells, warning lights, sounds, rough idling/running, etc. Previous to this incident? A. Yes this was their first attempt, there were no previous issues indicated by the unit. Local sop states any issues with ntv, swrft will be notified of the issues. Block 53 page 2 of the sf91 there were two (2) attempts to start the vehicle before the fire. I also attached sf94 statement of witness indicating there were no previous issues with the truck. 3. Was there any after-market equipment installed? A. There is no after-market equipment install in this vehicle.