Catalytic Converter: Testing and Inspection

Catalytic Converter For 8 Valve And 16 Valve VTEC-E Engine:

Catalytic Converter For 16 Valve Engine (except 16 Valve VTEC-E):

If excessive exhaust system back-pressure is suspected or if tail-pipe emissions are too high (while all other systems check OK), remove the catalytic converter from the car and make a visual check for plugging, melting or cracking of the ceramic grid inside. If any of the visible areas are damaged, replace the catalytic converter.