Verification conditions
Oil temperature not less than 60°С.
The tightness of the exhaust system has been checked.
The function test of the lambda probe has been carried out.
Examination
Connect a device for measuring the number of revolutions. Connect the CO measuring device to the CO measuring tube in the engine compartment.
Attention: In order to avoid measurement errors, make sure that the hose is connected absolutely tight to the CO measurement tube.
Leave the engine running at 2500±200 rpm for about 1 minute.
Measure and record the CO content at 2500±200 rpm.
Insert the PROBE of the CO measuring device into the exhaust pipe.
Measure and record the CO content at 2500±200 rpm. Catalyst efficiency is determined by calculating the following formula:
(Measured value before catalyst x 100%) / (Measured value after catalytic converter) = Efficiency in %
If the efficiency is less than 50%, the catalyst should be replaced.
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