Emission control components - maintenance and testing
1 In view of the special test equipment and procedures there is little that can be done in the way of maintenance and testing for the emissions control system. In the event of a suspected malfunction of the system, check the security and condition of all vacuum and electrical connections then, if applicable, refer to the following paragraphs for further information.
2 In addition, whenever working on any of these systems, make a careful note of any electrical or vacuum line connections before removing, to ensure correct refitting.
Positive crankcase ventilation (PCV)
3 Remove all the hoses and components of the system and clean them in paraffin or petrol. Ensure that all hoses are free from any obstruction and are in a serviceable condition. Where applicable, similarly clean the crankcase breather cap and shake it dry. Renew parts as necessary then refit them to the car.
Thermostatically-controlled air cleaner
4 Refer to Chapter 1, Section 29.