Genuine Mazda MX-6 Air Filter Box

Mazda MX-6 Air Filter Box Parts and Q&A

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  F201-13-Z01A
  Q: What is the function of the thermostatically controlled air filter box and how can its operation be checked on Mazda MX-6?

  A:

  Each engine has a thermostatically controlled air cleaner which pulls the air to the carburetor at various positions depending on the temperature of the engine. The simplest visual inspection can be conducted, and in case it is restricted, a small mirror might be required. You can start by lifting the hood and find the damper door within the air cleaner assembly that is located in the long snorkel inside the metal air cleaner housing. Make sure that the lengthy air hose(s) are firmly fastened and damaged. In case there is a flexible air duct that drains to the an end of the snorkel, with an area behind the grille, remove it to peep through the end of the snorkel and view the damper inside. This test is to be performed with the engine and outer air cool; the engine must be started and the snorkel should be viewed through the damper which is supposed to be in a closed position. With the damper closed, the air will not be able to enter through the end of the snorkel rather will enter the air cleaner via the flexible duct that will be attached to the exhaust manifold and the heat stove passage. When the engine is warmed to working temperature, the damper is to open to permit passage of air through the snorkel end and this can require 10-15 minutes depending on ambient temperature. To speed up this check, re-connect the snorkel air duct, drive the vehicle and the next step is to check whether the damper is fully open. In case the air cleaner is not enabled to work properly by a thermo-controlling device, additional research should be carried out.