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A. BG 406 (565ml aerosol) removes carbon deposits from the butterfly/throttle valve, air throttle body, EGR valve and idle air control valves on petrol engines. Restores smooth idle and throttle response.
A. Spray directly into the air intake while the engine is running, following the can directions. The cleaner enters via the throttle body and works through the intake tract. No engine disassembly required.
A. Yes. BG 406 contains lubricants and anti-corrosion ingredients and is safe for oxygen sensors, catalytic converters and other emissions-system components on petrol engines.
A. Symptoms that suggest throttle-body or intake fouling — rough or unstable idle, hesitation off-throttle, surging at light load, or a recent fault code for the throttle/idle control system — are the typical use cases.
A. BG 406 is an aerosol designed for direct application — suitable for end users with basic mechanical confidence. The professional workshop product for deeper induction cleaning is BG 211 (induction system cleaner via supply tool).
A. BG 406 cleans the throttle body, plenum, EGR and IAC — the metal and plastic intake hardware. BG MAF Cleaner (4073) is for the delicate hot-wire sensor only — they are not interchangeable.
A. Standard UK mainland delivery is 3–5 working days.
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