Some of the reported problems on the 2017 ford explorer 2.3 ecoboost engine date back to 2015. this one is used in vehicles like the ford explorer and some ford focus models. there have been reported issues with the smell of coolant in the exhaust, loss of heat in the cabin, and overheating engines. this is all caused by the wrong cylinder head gasket being used. the cylinder head gasket was designed for the ford mustang, and not the ford focus rs. there was also a problem in the 2.3 ecoboost engines with carbon buildup on the back of the inlet valves in the walls of the inlet. this could end up restricting airflow and preventing the valve from completely closing the way it's supposed to.
These are some of the reported problems on the 2017 ford explorer 2.3 ecoboost: engine dying while driving, acceleration lags, engine does not turn over and complete engine failure.