U.S. regulators have opened an investigation into a single petition concerning the 2.0-liter EcoBoost engine in a 2017 Ford Edge, alleging coolant intrusion into the motor resulted in a significant loss of power.

The Office of Defects Investigation has opened the case on whether to grant or deny the petition for a more thorough probe into the matter. If the agency were to do so and find a defect that creates a safety risk, a recall could be ordered. The agency identified model years 2015-18 Ford Edge vehicles as a part of its investigation.

"We are aware of the petition and will work with NHTSA to support," Ford spokesperson Sharyn Ghacham said in a statement.

The petition from Sean Johnson of Cedar Hills, Utah, details an incident in June in which his 2017 Edge displayed an "Engine Coolant Over Temperature" warning, lost engine power and had pink coolant fluid "gushing" from the reservoir. The petitioner stopped in the travel lane, creating a safety risk, he wrote, because the road had no shoulder. After a service stop that was unable to duplicate the overheating, a P0301 Cylinder 1 Misfire code appeared after more use. A few days later, a check engine code appeared, and the engine shook when the vehicle was turned on.

Johnson cited Ford Technical Service Bulletin 19-2346, which discusses coolant intrusion into cylinders of certain 2.0-liter EcoBoost engines. The bulletin calls for a five-hour pressure test and for replacement of the engine long block if coolant is present. The petitioner also cited similar complaints reported to NHTSA.

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