Gasoline engines
Be sure to refuel with unleaded gasoline only.
If leaded petrol has been added by mistake, the exhaust pipe before the catalytic converter and the catalytic converter itself must be replaced. Before installing new parts, fill the fuel tank at least twice with unleaded petrol.
Do not push or tow the engine. If unburned fuel gets into the catalytic converter, it could cause the catalytic converter to overheat and be destroyed. If necessary, jump-start the engine from another vehicle's battery.
It is necessary to avoid frequent cold starts following each other, otherwise unburned fuel accumulates in the catalytic converter, which then rapidly burns when heated, damaging the catalytic converter.
If difficulties with starting arise, do not keep the starter on for a long time. Fuel is constantly injected during starting. Determine the cause of the malfunction and eliminate it.
If ignition problems occur, then when identifying the fault, it is necessary to prevent fuel from being injected when starting the engine. To do this, it is necessary to remove the injection system control relay or the fuel pump relay.
Do not perform any spark testing with the spark plug caps removed.
No comparative evaluation of cylinder performance can be made by switching off the ignition of one cylinder. When switching off the ignition of one cylinder - also via the engine test stand - unburned fuel gets into the catalytic converter.
If misfires occur, avoid high engine speeds and immediately correct the problem.
Petrol and diesel engines
Do not park the vehicle over dry leaves or grass. The exhaust system in the catalytic converter area is very hot and radiates heat even after the engine has stopped.
When filling and topping up with oil, pay special attention to the fact that the maximum permissible oil level is never exceeded. Otherwise, as a result of incomplete combustion, excess oil gets into the catalyst and can damage the noble metal or completely destroy the catalyst.
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