Repairs & Diagnosis – Ford Focus 1.8Tdci

A compression test showed a loss of compression on number 1 cylinder.  

With the customers permission we removed the cylinder head to find a cracked piston.  With this engine normally being very strong, it was fair to assume the cause was not a casting fault of that piston but as a direct result of an extreme diesel knock.

A following call to the customer confirmed the suspicion that it had been driven with a nasty noise prior to failure.  This engine is fitted with delphi injectors with which problems are common. A simple injector removal in time would have saved this vehicle from its now uneconomical repair.

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