Mondeo/Focus/et

How to: Fix swirl flaps & save your engine (Ford Duratec HE, Mondeo/Focus/et al)

…or, the Swirl Flaps of Death! Early Duratec HE motors had problematic tumble flaps which tended to fail and dump pieces of their metal rod into the engine’s intake ports, leading to disaster. Later versions of the manifold improved the design but they still wear and fail, and any presence of port flaps is a […]

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