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ECT DATE
GDI VEHICLES – FUEL SYSTEM RECOMMENDATIONS
MAY 20, 2013
MODEL
ALL
This bulletin provides information regarding fuel system recommendations for Hyundai
vehicles equipped with Gasoline Direct Injection (GDI) engines. GDI engines operate at
much higher fuel pressures than regular gasoline engines and as a result specific fuel and
maintenance items are recommended to ensure optimum operation of these vehicles.
Vehicles that do not follow these recommendations can experience drivability issues such as
rough idle, lack of power and pre-ignition that may or may not trigger Diagnostic Trouble
Codes (DTC) stored in the ECM/PCM. Hyundai recommends that dealerships advise vehicle
owners of the following recommendations whenever a customer vehicle is in for service.
FUEL RECOMMENDATIONS
The use of high quality gasoline contributes significantly to the proper running of a GDI
engine. Poor quality gasoline can contain sediments, suspended water and low quantities of
detergents or fuel system cleaners. Use of poor quality gasoline can lead to engine deposit
build up and vehicle drivability issues, in both GDI and non-GDI engines.
To prevent these issues it is recommended that vehicle owners use gasoline from high
quality fuel suppliers. HACC recommends the use of gasoline that is recognized as “Top
Tier” Detergent Gasoline. Information on recognized Canadian and USA retailers of Top Tier
Detergent Gasoline can be found at www.toptiergas.com.
FUEL SYSTEM MAINTENANCE
The use of a fuel system/injector cleaner tank additive is part of the vehicle recommended
maintenance schedule for vehicles equipped with GDI engines. This fuel system cleaner is
recommended to be used every 6,000km to maintain optimum engine performance and
should be added every oil change as part vehicle preventative maintenance. The use of a
fuel system additive can help prevent build up in the engine and fuel system and prevent
vehicle driveability issues. Use of a fuel system cleaner is a customer pay maintenance item.
Dealers may order the fuel system cleaner through the regular parts ordering system using
part number: 084NA-26004.
NOTE: Normal warranty policies and procedures apply.