2020 Ram 2500: engine knocking or ticking

Filed Aug 7, 2025 · Engine, Fuel system · CA

Subject: Fuel System Failure Resulting in Engine Damage – 2020 RAM 2500 Pickup VIN: [XXX] Complaint Summary: I am submitting this complaint to formally report a dangerous and costly fuel system defect in my 2020 Dodge Ram 2500 Pickup (VIN: [XXX] ) that has resulted in catastrophic engine damage. Although Chrysler has issued a recall for the high-pressure fuel pump (HPFP) in many 2020 Ram trucks equipped with the 6.7L Cummins engine, I was told that my vehicle was not included in the recall—even though it exhibits all the classic symptoms of HPFP failure. This is a safety hazard and a potential emissions violation. Details of the Incident: In June 2025, I brought my truck to Tracy Chrysler Dodge Jeep RAM after experiencing engine misfires, loss of power, and a knocking noise. The dealership diagnosed a P0303 cylinder misfire and noted a fuel smell in the engine oil, as documented in repair order #[XXX]. Despite extensive diagnostic work—including compression tests, leak-down, and injector swaps—the misfire remained unresolved, and a tapping noise persisted. The technician explicitly noted fuel contamination in the oil and suspected internal engine damage due to a fuel system issue. To further investigate, I submitted an oil sample to Blackstone Laboratories. The lab confirmed the engine oil was heavily diluted with diesel fuel—over 10% fuel contamination, which reduced the viscosity from 5W40 to the equivalent of 5W20. This is consistent with HPFP failure leaking fuel into the crankcase. The oil report also noted excessive steel wear and recommended immediate oil change and fuel system inspection. At no time was a check engine light present, nor was there a clear diagnostic code for HPFP failure. Chrysler continues to deny responsibility even though the evidence clearly points to a failed HPFP—a well-documented issue for this engine model and year. The cost of diagnosis and parts alone has exceeded $4,000, and the engine is likely destroy INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA

Filed Sep 9, 2024 · Engine · 300,000 miles · TX

The contact owns a 2020 Ram 2500. The contact stated that while driving approximately 65 MPH, there was a knocking noise coming from the engine compartment, with the check engine warning light illuminated. The vehicle was taken to the local dealer to be diagnosed. The contact was informed that engine grid heater had overheated, causing damages to the engine. The engine was replaced, and the vehicle was repaired. The manufacturer was notified of the failure. The failure mileage was 300,000.

Filed Aug 19, 2023 · Body, Suspension · TX

I was making a left turn and something under my feet or floorboard a loud crack. then as i completed the turn there was a continue cracking sound until I stop. I looked for a problem, finding nothing obvious. As I drove off there was a noticeable knocking sound. Did not notice and different in the driving except a slight drift to the left, there is more knocking on rough roads. My 2020 Ram 2500 truck has only 18946 miles driven. I purchased the truck new, have had several of the recalls taken care of. I live in north Texas as of now 38 days temp over 100F. On a web site there are several others with the same problem and several fixes some have worked others not.

Filed Jun 7, 2022 · Engine, Fuel system · 24,000 miles · GA

The contact owns a 2020 Ram 2500. The contact stated while driving 35-40 MPH, the vehicle started shuddering and he heard abnormal knocking sounds coming from the engine. Additionally, the contact stated that the vehicle seemed to be at risk of a rollover. There was no warning light illuminated. The contact depressed the brake pedal and continued driving 20 MPH. The contact veered to the side of the road. The check engine warning light was illuminated. The contact drove the vehicle to the local dealer at a slower speed. The vehicle was not diagnosed or repaired. The contact became aware that the VIN was included in the federal safety agency Campaign Number: 21V880000 (Fuel System, Diesel) which he associated with the failure. The manufacturer was not notified of the failure. The failure mileage was approximately 24,000.

Filed Apr 25, 2022 · Engine, Fuel system · GA

Wanted to explain what happened to the truck. Left the house as normal, pulled out of the driveway. Normal acceleration around 45mph, truck started to spit and sputter making loud knocking noises in the engine. Lost complete power. Truck shut off by itself. Was able to crank back up and drive it back home with vigorously vibrating and sputtering. I was only about 200 yards from my driveway when this happened. Truck is not driveable.

Filed Nov 3, 2021 · Electrical, Engine · NC

I was driving my truck on 10/26 approximately 9 am when the engine made a loud knocking noise and then proceed to make a erratic clanking noise. The truck proceeded to completely shut off while driving, rendering me unable to control the vehicle as all systems shut down. There were no warning lights present or any other warning signs. It coasted to a stop on the side of the road. The safety of myself and anyone around me was at high risk as I had no ability to control the vehicle. The vehicle only has 12,000 miles on it so I had it towed to the closest dealership, Autostar of Hendersonville NC. It took a week to get a diagnosis because their solitary diesel tech was on vacation. They offered my no loaner vehicle and FCA has not made an adequate offer to cover the full cost of a loaner vehicle. The diagnosis on the vehicle was a high pressure fuel pump failure. I currently have not ETA on parts and no vehicle to drive. It is my understanding that the federal safety agency is already investigating this issue. Multiple attempts made to get help with a loaner vehicle, an ETA on parts/install have all been met with deflection from dealership and FCA customer care representatives. Any attempt made to inquire if the new fuel pump/system has been adequately updated to ensure this wont happen again has not been answered. Any attempt made to inquire if this issue has cause long lasting damage to the engine has not been answered. This is a serious problem and needs to be remedied. FCA needs to step up and take care of its customers.

Filed Mar 22, 2021 · Fuel system · 15,110 miles · AR

I was traveling and around 655 miles from home. My truck was idleing and started making a loud knocking noise. I turned it off and then it wouldn't start again. I called chrysler roadside assistance and had it towed to the nearest dealer, bluebonnet chrysler dodge and ram. After my vehicle sat there for 4 days, they finally looked at it and determined that my cp4 fuel injector pump had failed. It is all covered by warranty, but now I'm 655 miles from my truck with nothing to drive.