How to Determine if the Exhaust Valve is Damaged?

1 Answers
DeOlive
07/30/25 10:26am
Methods to determine if the exhaust valve is damaged: 1. Insert the oil dipstick into the throttle valve, probe to the bottom, then pull it out to check. If there is only some oil dust on the dipstick, it is fine, but if there is engine oil, it indicates that the exhaust valve is damaged; 2. Start the engine and let it idle, then apply suction by directly adding vacuum to the diaphragm chamber of the exhaust gas recirculation. Under normal circumstances, the engine will experience unstable idling or stalling. The exhaust valve, also known as the oil separator or pressure control valve, is installed between the compressor outlet and the condenser inlet. Through separation, it improves the heat transfer efficiency in the condenser and evaporator.
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