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Frequently asked questions about cars and motorcycles

How to Clean the EGR Valve

Model: (Various brands) Various
Part: EGR valve

Video tutorial

The EGR valve is constantly in contact with exhaust gases as its function is to reintroduce some of them into the intake for post-combustion and to reduce emissions; however, since exhaust gases are contaminated with oil vapours and unburnt diesel, the valve tends to get dirty and can become clogged; therefore, as maintenance, it is advisable to dismantle and clean it using specific cleaners; it is not recommended to use sprays injected into the intake as this may dislodge deposits and end up in the cylinders or under the valves.


Updated on 20 February 2026 by ScegliAuto


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How to Reset the Tyre Pressure Warning Light on a Kia Rio?

The tyre pressure warning light displayed on the instrument cluster of the Kia Rio can be reset by inflating the tyres until they reach the recommended pressure value: this value is indicated on the sticker affixed to the driver's door pillar. Once all tyres have been inflated to the recommended pressure, turn on the ignition to check that the light has disappeared: if it is still present, it may be necessary to drive for a few miles, allowing the sensors to work and thus turning off the light.

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