Fuel and emission control systems

Evaporative gas check valve (one-way) inspection (l.h.d.)

~1min read

1. Remove the evaporative gas check valve (one-way).

2. Apply pressure to port A, and verify that there is no airflow.

  • If there is airflow, replace the evaporative gas check valve (one-way).

3. Apply negative pressure to port A, and verify that there is air flow.

  • If there is no airflow, replace the evaporative gas check valve (one-way).

Test yourself

A quick Mazda 6 quiz: every answer comes with an explanation and a link to the manual page.