Ford is recalling the 2013 Escape to fix engine plugs that could leak coolant, according to a filing Tuesday with the National Highway Traffic Safety Administration. It's the third time the new Escape has been recalled since it went on sale earlier this year.

In August, a Nashville Ford dealer reported an underhood fire on a 2013 Escape during a test drive when an engine cylinder head cup plug came loose. The cup plugs keep coolant from flowing out of the engine's external cooling jacket, and typically pop out only if the coolant freezes and expand. However, in this instance and a similar problem Ford found in July, the plug simply loosened, causing coolant to leak and catch fire when the glycol in the coolant contacted the overheated engine.

Ford is recalling only models with the 1.6-liter EcoBoost engine, which was recalled in July for fuel lines that could split and leak gasoline. Ford says 6,146 vehicles with that engine will be recalled in the U.S., out of about 7,600 worldwide. Dealers will seal the plug and fit a cap on top beginning Sept. 10. Owners can contact Ford at 1-866-436-7332.