Gasoline engines
Be sure to use unleaded gasoline only.
Starting a warm engine with acceleration or towing is not allowed. Use only auxiliary wires and an additional battery. Unburned fuel, if ignited, can cause the catalyst to overheat and fail.
If starting is difficult, the starter should not be turned on for a long time. When the starter is running, fuel is injected. Find the cause of the difficult start and fix it.
Do not drive until the fuel tank is completely empty.
If misfiring occurs, avoid high engine speeds and repair as soon as possible.
Use only the spark plugs specified in the manual.
Do not check for «spark» with the spark plugs removed.
Unscrew the nuts in the area of the catalyst on the bottom and remove the cross member.
It is not allowed to compare the operation of cylinders (checking their balance) by switching off the spark plugs of individual cylinders. With this cylinder shutdown, unburned fuel enters the catalyst.
Gasoline and diesel engines
Do not park your vehicle over dry grass or foliage. The exhaust system in the area of the catalytic converter is very hot and radiates heat even after the engine has been switched off.
Support the exhaust system with a floor jack and a suitable support, such as wood. The weight of the system is from 35 to 45 kg.
Do not coat exhaust pipes with underbody protectant.
Do not change the position of the exhaust system heat shields.
When topping up engine oil, make sure that it is never overfilled above the maximum mark on the dipstick. Excess oil otherwise enters the catalyst due to incomplete combustion and can damage the precious metal and disable the catalyst.