What to Do If a Truck Fails the Exhaust Emission Test?
1 Answers
Truck fails the exhaust emission test solution: Pay attention to frequent cleaning of the throttle valve and use 97-octane gasoline, as higher-grade fuel produces relatively less pollution. Daily maintenance of the three-way catalytic converter is also essential; clean it regularly to ensure it functions properly. Trucks often fail emission tests due to unqualified engine power, primarily caused by carbon deposits, wear of the fuel pump and injectors, poor performance of the transmission mechanism, or insufficient diesel grade. If the issue stems from vehicle system or component failure, professional repair at an auto repair shop is necessary.