open gas tank Hyundai Grandeur 2002 Owner's Manual

1- 2 FEATURES OF YOUR HYUNDAI
B010B01A-AAT What About Gasohol? Gasohol (a mixture of 90% unleaded gasoline and 10% ethanol or grain alcohol) may be used in your Hyundai.However, if your engine developsdriveability problems, the use of 100%unleaded gasoline is recommended.Fuels with unspecified quantities of alcohol, or alcohols other than ethanol, should not be used. B010D01S-AAT Do not Use Methanol Fuels containing methanol (wood al- cohol) should not be used in yourHyundai. This type of fuel can reducevehicle performance and damage com-ponents of the fuel system. B010E01A-AAT Gasolines for Cleaner Air To help contribute to cleaner air, Hyundai recommends that you usegasolines treated with detergent addi-tives, which help prevent deposit for- mation in the engine. These gasolines will help the engine run cleaner andenhance performance of the EmissionControl System.
B010A02A-GAT FUEL RECOMMENDATIONS Use Unleaded Gasoline Unleaded gasoline with a Pump Oc- tane Rating of 87 (Research OctaneNumber 91) or higher must be used in Hyundai vehicle. If leaded gasoline is used, it will cause the catalytic con-verter to become ineffective and theemission control system to malfunc-tion.This can also result in increased main- tenance expense. To avoid accidental use of leaded fuel, the large nozzleused with leaded gasoline at servicestations can not be inserted into fueltank opening of Hyundai vehicle.
NOTE:
o For some countries, Hyundai ve-
hicles are designed to use leadedgasoline. When you are going touse leaded gasoline, ask to Hyundai dealer whether leaded gasoline in your vehicle is avail-able or not.
o Octane Rating of leaded gaso- line is same with unleaded one.
B010A02L-1
! CAUTION:
Your Hyundai's New Vehicle Lim- ited Warranty may not cover dam- age to the fuel system and perfor- mance problems that are caused bythe use of methanol or fuels con-taining methanol.

7- 2 EMISSION CONTROL SYSTEMS
H010A01A-GAT
EMISSION CONTROL SYSTEM (If Installed)
Your Hyundai is equipped with an
emission control system to meet all requirements of the Emission prohibi-tion rules of your province.
There are three emission control sys-
tems which are as follows.
1) Crankcase emission control sys-
tem
2) Evaporative emission control sys-
tem
3) Exhaust emission control system
In order to assure the proper function
of the emission control systems, it is recommended that you have your car inspected and maintained by an au-thorized Hyundai dealer in accordance with the maintenance schedule in this manual. H010B01A-AAT
1. Crankcase Emission Control
System
The positive crankcase ventilation
system is employed to prevent airpollution caused by blow-by gasesbeing emitted from the crankcase. This system supplies fresh air to the crankcase through the air intake hose.Inside the crankcase, the fresh air mixes with blow-by gases, which then pass through the PCV valve and intothe induction system.
H010C02Y-GAT
2. Evaporative Emission
Control System
The Evaporative Emission Control
System is designed to prevent fuel vapors from escaping into the atmo- sphere. Canister
While the engine is inoperative, fuel
vapors generated inside the fuel tank are absorbed and stored in the canis- ter. When the engine is running, the fuel vapors absorbed in the canisterare drawn into the induction system through the purge control solenoidvalve. Purge Control Solenoid Valve
The purge control solenoid valve is
controlled by the ECM; when the en- gine coolant temperature is low, and during idling, it closes, so that evapo- rated fuel is not taken into the surgetank. After engine warm-up, during ordinary driving, it opens so as to introduce evaporated fuel to the surgetank.
H010D01A-AAT
3. Exhaust Emission Control
System
The exhaust emission control system
is a highly effective system whichcontrols exhaust emission while main- taining good vehicle performance.
H010E01Y-GAT
EGR System
This system helps control nitrogen
oxides by recirculating a part of the exhaust gas into the engine, therebyreducing cylinder combustion tem- perature.