Contents:
• If the there is lack of power, excessive oil consumption or poor fuel economy, measure the compression pressure.
1.Start the engine and turn the coolant temperature to 80 - 95 °C and stop.
2.Remove the engine cover.(Refer to Engine and Transaxle Assembly - "Engine Cover")
3.Disconnect the injector connectors (A).
4.Remove the ignition coils.(Refer to Engine Electical System - "Ignition Coil")
5.Remove spark plugs.(Refer to Engine Electrical System - "Spark Plug")
6.Check the cylinder compression pressure.
(1)Insert a compression gauge into the spark plug hole.
(2)Fully open the throttle valve.
(3)While cranking the engine, measure the compression pressure.
• Always use a fully charged battery to obtain engine speed of 200 rpm or more.
(4)Repeat steps (1) through (3) for each cylinder.
• If you need to check the compression pressure for more than three times, restart the engine to restore the lubrication condition to be normal and then check the compression pressure again.
Compression pressureStandard : 1225.83kPa (12.5kg/cm, 177.79psi) (200-250 rpm)Minimum : 1078.73kPa (11.0kg/cm, 156.46psi)Difference between each cylinder : 98 kPa (1.0 kg/cm, 14 psi) or less
(5)If the cylinder compression in 1 or more cylinders is low, pour a small amount of engine oil into the cylinder through the spark plug hole and repeat steps (1) through (3) for cylinders with low compression.
• If adding oil helps the compression, it is likely that the piston rings and/or cylinder bore are worn or damaged.
• If pressure stays low, a valve may be sticking or seating is improper, or there may be leakage past the gasket.
7.Install the spark plugs.(Refer to Engine Electrical System - "Spark Plug")
8.Install the ignition coil.(Refer to Engine Electical System - "Ignition Coil")
9.Connect the injector connectors (A).
10.Some DTCs may exist after the inspection test and may need to be manually cleared with GDS.
11.Install the engine cover.(Refer to Engine and Transaxle Assembly - "Engine Cover")
Tool (Number and name) | Illustration | Use |
Valve spring compressor (09222-3K000) Valve spring compressor adapter (09222-3K100) |
| Removal and installation of the intake / exhaust valve spring and retainer lock |
Valve stem seal installer (09222-2B100) |
| Installation of the valve stem seal |
Oil pan remover (09215-3C000) |
| Removal of oil pan |
Crankshaft front oil seal installer (0K231-2C200) |
| Installation of the crankshaft front oil seal |
Crankshaft rear oil seal installer (09231-2B200) Handle (09231-H1100) |
| Installation of the crankshaft rear oil seal |
Ring gear stopper (09231-3N100) |
| Removal and installation of crankshaft damper pulley bolt |
Hyundai Accent (HC) (2017 - 2022) Service Manual: Heater Unit
- Component Location 1. Heater unit assembly - Compoents 1. Heater core cover2. Heater core & seal assembly3. Heater case [LH]4. Mode control actuator5. Air guide [LH]6. Heater unit pad7. Deforster door assembly8. Vent door assembly9. Floor door assembly10. Temperature door assembly11. Lower case12. Drain hose13. Heater case [RH]14.Hyundai Accent (HC) (2017 - 2022) Service Manual: A/C Pressure Transducer
- Description The A/C Pressure Transducer (APT) converts the pressure value of high pressure line into voltage value after measuring it. By converted voltage value, engine ECU controls the cooling fan by operating it high speed or low speed. Engine ECU stops the operation of the compressor when the temperature of refrigerant line is very high or very low irregularly to optimize air conditioning system.