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What is the MAF Sensor and How to Keep it Clean

Model: (Various brands) Various
Part: Checks and maintenance

Video tutorial

The MAF (Mass Air Flow) sensor is a crucial component in modern petrol and diesel engines. Its function is to measure the amount of air entering the engine to allow the ECU to accurately dose the amount of fuel to inject.

It ensures the correct air-fuel ratio (14.7:1 for petrol); optimises power, fuel consumption, and emissions; allows the ECU to adjust ignition timing and boost pressure (in turbo engines). Symptoms of a dirty or faulty MAF include engine stalling or rough idling; loss of power during acceleration; increased fuel consumption; black smoke (if diesel) or a rich mixture (petrol); and the engine light coming on. Keeping the MAF sensor clean is simple.

Use a quality air filter and replace it regularly, avoid driving on very dusty roads without an efficient air filter, and clean the sensor with a specific spray (MAF cleaner) at least every 30,000-50,000 miles. Do not use generic solvents or compressed air (risk of damaging the filament).

Do not touch the sensor filament with your fingers.


Posted on 11 June 2026 by ScegliAuto


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To remove the rear seat of a Hyundai Tucson, follow these steps. Start by moving the front seats to their most forward position to gain space. Next, locate the release lever on the underside of the rear seat, near the floor. Press this lever down while pulling the seat upwards to unlock it from the anchor pins. Once unlocked, tilt the seat upwards and forwards to remove it from its position. Repeat this process for both sides of the rear seat. Be careful of any electrical cables or components that may be connected to the seat during removal. Once the rear seat is removed, the disassembly is complete.

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by ScegliAuto

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