The Recent Recall of Ford’s Self-Occluding 1.0-Liter EcoBoost Engine

The issue centers around the 1.0-liter three-cylinder engine utilized in 2016-2018 Focus hatchbacks and 2017-2022 EcoSport SUVs. These engines have gained notoriety for experiencing oil pressure drops as early as 50,000 miles, with investigations revealing clogged oil pickups caused by deteriorated oil pump drive belts. Suspicions initially pointed towards belt tensioner malfunctions, a theory that was eventually confirmed in the NHTSA’s recall documentation.

The investigation unveiled that the tensioner’s “caulking” (or RTV-like) connection weakens over the vehicle’s lifespan, leading to misalignment of the tensioner arm. This misalignment can affect the balance shaft, causing tensioner damage and belt stress. Mechanicians postulate that this misalignment might result in the belt teeth disengaging from the oil pump sprocket, ultimately accumulating in the oil pan. Either scenario can trigger a significant reduction or complete loss of oil pressure, both potentially catastrophic for an engine.

This malfunction not only leads to power loss while driving but also disables the vacuum pump crucial for braking assistance, escalating the risk of rear-end collisions. Ford has acknowledged one accident resulting from oil pump malfunction, causing two injuries but fortunately no fatalities.

While the belt system isn’t slated for maintenance until 150,000 miles, it often malfunctions shortly beyond Ford’s 60,000-mile powertrain warranty, prompting affected owners to pursue legal action. Ford now aims to support them directly through the recall process, which involves upgrading the tensioner to a shorter arm configuration with a bolted joint. Additionally, the belt will be replaced with a new material variant.

Affected owners are being notified of the recall and will be offered complimentary servicing as soon as the necessary parts are available.

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