Engine tune-up section First price: 100 SAR. This is a type of tune-up for four-cylinder cars: - Change spark plugs - Clean throttle body - Check ignition coils and change coil boots - Clean air flow sensor - Change belt and clean exhaust gas sensor All this for four-cylinder cars for 100 SAR. Note: Parts are on the customer. Second offer: 150 SAR for a four-cylinder car: - Change fuel filter - Change spark plugs - Clean throttle body - Check ignition coils and change coil boots - Clean air flow sensor - Change belt and clean exhaust gas sensor All this for four-cylinder cars. Note: Parts are on the customer. Third offer for a four-cylinder car: Same offer, plus cleaning fuel injectors. 200 SAR