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Maintenance
· 5 min read
BMW high-pressure fuel pump (HPFP) problems: symptoms and causes
The BMW HPFP is a key part of every direct-injection engine. What the high-pressure fuel pump does, the typical symptoms of a failing pump, why the N54 is famous for it and how the fault is diagnosed.
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· 5 min read
BMW carbon build-up: why direct-injection engines need walnut blasting
Direct-injection BMW engines can collect carbon deposits on the intake valves. Why it happens, the symptoms, how walnut blasting works and what owners can do to slow it down.
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