Hyundai Elantra: Precautions For Catalytic Converter - General Information - Hyundai Elantra MD 2010-2015 Service manualHyundai Elantra: Precautions For Catalytic Converter

If a large amount of unburned gasoline flows into the converter, it may overheat and create a fire hazard. To prevent this observe the following precautions and explain them to your customer.
1.
Use only unleaded gasoline.
2.
Do not run the engine while the car is at rest for a long time. Avoid running the engine at fast idle for more than 10minutes and idle speed for more than 20 minutes.
3.
Do not measure engine compression for an extended time. Engine compression tests must be made as rapidly as possible. Remove the fuel pump relay before performing a compression test.
4.
Do not dispose of used catalytic converter together with parts contaminated with gasoline or oil.