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  • William Maley
    William Maley
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    Ford Admits the Focus RS Has Some Engine Trouble

      Why some Focus RSs have a case of white smoke

    The Ford Focus RS is a serious hot hatch with a high-output version of the 2.3L EcoBoost and an all-wheel drive system featuring a 'drift mode'. But there is a serious issue that could make the RS not so hot.

    During the past year, numerous RS owners have been reporting of a plume of white smoke coming out of the tailpipe, a tell-tale sign of burning coolant and possibly a head-gasket failure. A Ford spokesman confirmed to Autocar this issue and said that it is affecting models from 2016 to 2017, and with mileage as low as 6,000 miles.

    The Ford spokesman said the company is “working on a repair for all customers,” hinting that a fix could be rolled out to models that are not currently affected.

    “In the meantime, if vehicles show these symptoms, customers should visit their dealer for an inspection and repair under warranty,” the spokesman said.

    No reason was given by Ford as to what the problem is, but the company has replaced several engines under warranty that are "built to the latest specification".

    The issue seems like a head-gasket failure, but that might not be the case. Members on the FocusRS.org forum speculate the issue comes from engine block distorting over multiple heat cycles. This creates an opening between the block and cylinder head that the gasket cannot seal, allowing coolant to enter and cause the aforementioned problems.

    Interestingly, the Mustang which uses the same 2.3L EcoBoost isn't affected by this problem. It uses a different alloy for its cylinder head and engine block than the Focus RS.

    Source: Autocar, FocusRS.org Forums


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    Maybe just put in the Mustang 2.3L turbo motor then into the RS and call it good since the Mustang does not have this issue.

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    I'm actually really surprised that both 2.3's use different block and head materials. I would have thought it would have been cheaper to use one material, even if it were the more expensive of the two, or both. 

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