RTC6436 - Carburettor Jet Needle

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Carburettor Jet Needle for the 3.5L V8 twin-carburettor petrol engine. The tapered needle is carried in the carburettor piston and rides within the jet, where its profile meters th e fuel flow against airflow as the piston rises and falls. The needle taper sets the fuelling across the rev range, so a worn or incorrect needle disturbs the air/fuel mixture and running. Renew on overhaul or when re-profiling the carburettors during a tune. Show more