Ford Australia dealers have been informed some examples of the Ranger Raptor ute may need a new engine, due to a problem with the valve springs.

    In a bulletin obtained by CarExpert, the company warns technicians of Ranger Raptors running rough or experiencing a rough idle – and offers a step-by-step guide to diagnosing and rectifying the problem, including replacing the engine in some cases.

    Special Service Message (SSM) 51979 lists a series of diagnostic trouble codes for the powertrain.

    P0300 is a random misfire code, while codes P0301 to P0306 indicate a misfire in each of the twin-turbo V6 engine’s cylinders.

    “SSM 51979 was issued to Ford Australia’s dealer network on October 11, 2023,” said a Ford Australia spokesperson.

    “A Special Service Message, or SSM, is advice to Ford service technicians to check for specific issues when vehicles present for service.

    “We issue SSMs on a regular basis to ensure that service departments have the latest information available to ensure customers get the best possible service.

    “Approximately 12 vehicles have been identified in field. We will continue to monitor this issue, collect data from the field, and ensure that any customer with an affected vehicle is kept informed throughout the repair process.”

    We’ve contacted Ford Australia to confirm if any engines have been replaced due to this issue.

    The SSM provides detailed instructions for technicians to follow.

    “Should a vehicle present with the above concern, a potential cause for this is a broken valve spring(s),” the Special Service Message advises technicians.

    “Inspect the spark plugs for damage and if damage is found replace as necessary and recheck for the concern.

    “If no damage is found or the spark plugs do not rectify the concern, perform a compression test and if it fails perform a cylinder leakage test.

    “If the compression and cylinder leakage tests are out of specification, remove both valve covers and inspect for damaged/broken valve spring(s).

    “Prior to replacing the valve spring(s), ensure no further consequential engine damage has occurred.

    “If the engine requires replacing, ensure to also replace the turbocharger from the side of the affected spring(s).

    “If there is no consequential damage to the engine, replace only the affected valve spring(s) and all associated one time use parts.”

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    William Stopford

    William Stopford is an automotive journalist based in Brisbane, Australia. William is a Business/Journalism graduate from the Queensland University of Technology who loves to travel, briefly lived in the US, and has a particular interest in the American car industry.

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