Rules for operating vehicles with a catalytic converter (Mazda Familia BG)

To avoid damage to the lambda probe and catalytic converter, follow these instructions:

Be sure to use unleaded petrol.
If the car was accidentally filled with leaded petrol, the exhaust pipe before the catalytic converter and the catalytic converter itself must be replaced. At least 2 fill-ups with unleaded petrol must be performed before installing new parts.
Do not push or tow the vehicle to start the engine. Unburned fuel may cause overheating and damage the catalytic converter when ignited. Use an auxiliary cable to start the engine.
Frequent, consecutive cold starts should be avoided. Otherwise, unburned fuel accumulates in the catalytic converter, which, when heated, can explode and damage the catalytic converter.
If there are difficulties during starting, do not keep the starter on for a long time, as this will inject fuel. Determine and eliminate the cause of the malfunction.
Do not check for spark with the spark plug tip removed.
You cannot perform a cylinder comparison test by turning off the ignition of one of the cylinders. When one of the cylinders is turned off, unburned fuel gets into the catalytic converter.
If there are misfires, do not rev the engine too high and fix the problem as quickly as possible.
Do not park the vehicle in areas where flammable materials such as dry grass or leaves may come into contact with the exhaust system. Risk of fire!