How do you test for a clogged catalytic converter?
Catalytic converters filter harmful gases and pollutants from the exhaust system by chemically converting the gases into less harmful substances. The chemical reaction takes place inside the converter, and its performance remains undetected until a problem arises. A check engine light or a poor performing engine will both occur when the internal substrate of the converter breaks down and clogs or restricts the exhaust flow from exiting the system.The Exhaust Pressure TestA device used to test exhaust pressure employs a pressure gauge, tube and small hose. A drill is used with a high-speed drill bit to make a small hole in the exhaust system. To test the air flow passing through the converter, drill the hole before the converter to find out if pressure has built up between the manifold and the converter. Inserted the tube into the hole in the exhaust pipe, and connect the tube to the pressure gauge. If the gauge detects zero or minimal exhaust pressure, the converter is OK. However, if
