Hyundai Ioniq: Engine Mechanical System / Specifications
Hyundai Ioniq (AE) 2017-2024 Service Manual / Engine Mechanical System / Specifications
| Specifications |
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Description
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Specification
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Limit
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General
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| Type | In-line, DOHC | | ||||||||||
| Number of cylinders | 4 | | ||||||||||
| Bore | 72.0 mm (2.8346 in) | | ||||||||||
| Stroke | 97.0 mm (3.8189 in) | | ||||||||||
| Total displacement | 1,580 cc (96.42 cu.in) | | ||||||||||
| Compression ratio | 13.0 : 1 | | ||||||||||
| Firing order | 1 - 3 - 4 - 2 | | ||||||||||
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Valve timing
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| Intake valve | Opens | ATDC 10° - BTDC 60° | | |||||||||
| Intake valve | Closes | ABDC 108.8° - ABDC 38.8° | | |||||||||
| Exhaust valve | Opens | BBDC 50.2° - BBDC 10.2° | | |||||||||
| Exhaust valve | Closes | ATDC 3° - ATDC 43° | | |||||||||
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Cylinder head
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| Flatness of gasket surface | Less than 0.05 mm (0.0025 in) Less than 0.02 mm (0.0008 in) / 100 x 100 | | ||||||||||
| Flatness of manifold | Intake | Less than 0.1 mm (0.0039 in) | | |||||||||
| mounting surface | Exhaust | Less than 0.1 mm (0.0039 in) | | |||||||||
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Camshaft
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| Camheight | Intake | 36.42 mm (1.4339 in) | | |||||||||
| Exhaust | 36.15 mm (1.4232 in) | | ||||||||||
| Journal outer diameter | Intake | NO.1 | 36.459 - 36.473 mm (1.43539 - 1.43594 in.) | | ||||||||
| NO2,3,4,5 | 22.964 - 22.978 mm (0.90409 - 0.90464 in.) | |||||||||||
| Exhaust | NO.1 | 36.464 - 36.478 mm (1.43559 - 1.43614 in.) | | |||||||||
| NO2,3,4,5 | 22.964 - 22.978 mm (0.90409 - 0.90464 in.) | |||||||||||
| End play | 0.1 - 0.2 mm (0.0039 - 0.0079 in.) | |||||||||||
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Valve
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| Valve length | Intake | 100.94 mm (3.9740 in) | | |||||||||
| Exhaust | 101.09 mm (3.9799 in) | | ||||||||||
| Stem outer diameter | Intake | 5.465 - 5.480 mm (0.2151 - 0.2157 in) | | |||||||||
| Exhaust | 5.448 - 5.470 mm (0.2144 - 0.2154 in) | | ||||||||||
| Face angle | 45.25° - 45.75° | |||||||||||
| Thickness of valve head (margin) | Intake | 1.35 - 1.65 mm (0.0531 - 0.0650 in.) | | |||||||||
| Exhaust | 1.60 - 1.90 mm (0.0630 - 0.0748 in.) | | ||||||||||
| Valve stem to valve guide clearance | Intake | 0.020 - 0.047 mm (0.00078 - 0.00185 in) | | |||||||||
| Exhaust | 0.030 - 0.064 mm (0.00118 - 0.00251 in) | | ||||||||||
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Valve guide
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| Length | Intake | 45.8 - 46.2 mm (1.8031 - 1.8189 in.) | ||||||||||
| Exhaust | 45.8 - 46.2 mm (1.8031 - 1.8189 in.) | |||||||||||
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Valve spring
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| Free length | 50.27 mm (1.9791 in) | | ||||||||||
| Load | 16.4 ± 0.8 kg / 35.5 mm (161 ± 8 N / 1.3976 in) | | ||||||||||
| 26.0 ± 0.9 kg / 27.7mm (255 ± 9 N / 1.0905 in) | | |||||||||||
| Out of squareness | 1.5° MAX | | ||||||||||
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Cylinder block
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| Cylinder bore | 72.00 - 72.03 mm (2.8346 - 2.8358 in) | | ||||||||||
| Flatness of gasket surface | Less than 0.05 mm (0.0020 in) Less than 0.02 mm (0.0008 in) / 100 x 100 | | ||||||||||
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Piston
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| Piston outer diameter | 71.965 - 71.995 mm (2.8333 - 2.8344 in) | | ||||||||||
| Piston to cylinder clearance | 0.02 - 0.04 mm (0.0008 - 0.0016 in) | | ||||||||||
| Ring groove width | No. 1 ring groove | 1.035 - 1.05 mm (0.0407 - 0.0413 in) | | |||||||||
| No. 2 ring groove | 1.23 - 1.25 mm (0.0484 - 0.0492 in) | | ||||||||||
| Oil ring groove | 2.010 - 2.025 mm (0.0791 - 0.0797 in) | | ||||||||||
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Piston ring
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| Side clearance | No. 1 ring | 0.05 - 0.08 mm (0.0020 - 0.0031 in) | | |||||||||
| No. 2 ring | 0.04 - 0.08 mm (0.0015 - 0.0031 in) | | ||||||||||
| Oil ring | 0.050 - 0.125 mm (0.0020 - 0.0049 in) | | ||||||||||
| End gap | No. 1 ring | 0.13 - 0.23 mm (0.0051 - 0.0091 in) | | |||||||||
| No. 2 ring | 0.30 - 0.40 mm (0.0118 - 0.0157 in) | | ||||||||||
| Oil ring | 0.20 - 0.70 mm (0.0079 - 0.0276 in) | | ||||||||||
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Piston pin
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| Piston pin outer diameter | 17.997 - 18.000 mm (0.7085 - 0.7087 in.) | | ||||||||||
| Piston pin hole inner diameter | 18.005 - 18.009 mm (0.7089 - 0.7090 in.) | | ||||||||||
| Piston pin hole clearance | 0.005 - 0.014 mm (0.00019 - 0.00055 in) | | ||||||||||
| Connecting rod small end hole inner diameter | 18.005 - 18.011 mm (0.7089 - 0.7091 in.) | | ||||||||||
| Connecting rod small end hole clearance | 0.005 - 0.014 mm (0.0002 - 0.0006 in.) | | ||||||||||
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Connecting rod
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| Connecting rod big end inner diameter | 42.000 - 42.018 mm (1.6535 - 1.6542 in) | | ||||||||||
| Connecting rod bearing oil clearance | 0.018 - 0.036 mm (0.0007 - 0.0014 in) | | ||||||||||
| Side clearance | 0.1 - 0.25 mm (0.0039 - 0.0098 in) | | ||||||||||
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Crankshaft
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| Main journal outer diameter | 47.942 - 47.960 mm (1.8875 - 1.8882 in) | | ||||||||||
| Pin journal outer diameter | 38.954 - 38.972 mm (1.5336 - 1.5343 in) | | ||||||||||
| Main bearing oil clearance | 0.006 - 0.024 mm (0.0002-0.0009 in) | | ||||||||||
| End play | 0.07 - 0.25 mm (0.0028 - 0.0098 in) | | ||||||||||
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Oil pump
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| Side clearance | Inner rotor | 0.040 - 0.090 mm (0.0016 - 0.0035 in) | | |||||||||
| Outer rotor | 0.040 - 0.090 mm (0.0016 - 0.0035 in) | | ||||||||||
| Relief spring | Opening pressure | 1st : 210.84 - 279.49 kPa (2.15 - 2.85 kgf/cm², 30.58 - 40.54 psi) 2nd : 441.30 - 539.36 kPa (4.5 - 5.5 kgf/cm², 64.00 - 78.23 psi) | | |||||||||
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Engine oil
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| Oil quantity | Total | 4.1 L (1.08 U.S.gal., 4.33 U.S.qt., 3.60 lmp.qt.) | When replacing a short engine or a block assembly | |||||||||
| Oil pan | 3.4 L (0.89 U.S.gal., 3.59 U.S.qt., 2.99 lmp.qt.) | | ||||||||||
| Drain and refill | 3.8 L (1.00 U.S.gal., 4.01 U.S.qt., 3.34 lmp.qt.) | Including oil filter | ||||||||||
| Oil grade | Specifications | 5W-30 / ACEA A5 / B5
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| Oil pressure (at 1000rpm) | 1.0 bar or above | Oil temperature in oil pan : 110±2°C (230 ± 3.6°F) | ||||||||||
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Cooling method
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| Cooling system | Forced circulation with water pump | | ||||||||||
| Coolant quantity | 6.7 L (1.76 U.S.gal., 7.07 U.S.qt., 5.89 lmp.qt.) | | ||||||||||
| Main thermostat | Type | Wax pellet type | | |||||||||
| Opening temperature | 88 ± 1.5 °C (190.4 ± 2.7°F) | | ||||||||||
| Full opening temperature | 100°C (212°F) / 8mm (0.3150 in.) more than | | ||||||||||
| Separate cooling thermostat | Type | Wax pellet type | ||||||||||
| Opening temperature | 105 ± 1.5°C (221 ± 2.7 °F) | |||||||||||
| Full opening temperature | 120°C (248.0 °F) / 8 mm (0.3150 in.) More than | |||||||||||
| Radiator cap | Main valve opening pressure | 93.16 - 122.58 kpa (0.95 - 1.25 kg/cm², 13.51 - 17.78 psi) | | |||||||||
| Vacuum valve opening pressure | Max 6.8 kPa (Max 0.07 kg/cm², 0.99 psi) | | ||||||||||
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Water temperature sensor
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| Type | Thermistor type | | ||||||||||
| Resistance | 20°C (68°F) | 2.45 ± 0.14 kΩ | | |||||||||
| 80°C (176°F) | 0.3222 kΩ | | ||||||||||
Tightening Torques
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Item
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N.m
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kgf.m
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lb-ft
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Engine mounting
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| Engine mounting bracket and body fixing blot | 49.0 - 63.7 | 5.0 - 6.5 | 36.1 - 47.0 |
| Engine mounting insulator to engine mounting support bracket fixing nut | 88.3 - 107.9 | 9.0 - 11.0 | 65.1 - 79.6 |
| Engine mounting support bracket and engine support bracket fixing bolt | 58.8 - 73.5 | 6.0 - 7.5 | 43.4 - 54.2 |
| Engine mounting support bracket and engine support bracket fixing nut | 58.8 - 73.5 | 6.0 - 7.5 | 43.4 - 54.2 |
| Transaxle mounting bracket and body fixing bolt | 49.0 - 63.7 | 5.0 - 6.5 | 36.1 - 47.0 |
| Transaxle mounting insulator and transaxle support bracket fixing bolt | 88.3 - 107.9 | 9.0 - 11.0 | 47.0 - 61.5 |
| Roll rod bracket and sub frame fixing bolt | 49.0 - 63.7 | 5.0 - 6.5 | 36.1 - 47.0 |
| Roll rod bracket to roll rod support bracket fixing bolt | 107.9 - 12.75 | 11.0 - 13.0 | 79.6 - 94.0 |
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Timing system
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| Hydraulic tensioner | 27.5 - 31.4 | 2.8 - 3.2 | 20.3 - 23.1 |
| Mechanical tensioner | 18.6 - 23.5 | 1.9 - 2.4 | 13.7 - 17.4 |
| Timing chain cover bolt | 18.6 - 23.5 | 1.9 - 2.4 | 13.7 - 17.4 |
| Idler | 39.2 - 49.0 | 4.0 - 5.0 | 28.9 - 36.2 |
| Timing chain tensioner arm bolt | 9.8 - 11.8 | 1.0 - 1.2 | 7.2 - 8.7 |
| Timing chain guide bolt | 9.8 - 11.8 | 1.0 - 1.2 | 7.2 - 8.7 |
| Crankshaft damper pulley bolt | [65.7 - 71.6 ] + [39°- 41°] | [6.7 - 7.3] + [39 - 41°] | [48.5 - 52.8] + [39° - 41°] |
| Timing chain tensioner bolt | 9.8 - 11.8 | 1.0 - 1.2 | 7.2 - 8.7 |
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Cylinder head
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| High pressure fuel pipe nut | 26.5 - 32.4 | 2.7 - 3.3 | 19.5 - 23.9 |
| High pressure fuel pump mounting bolt | 12.7 - 14.7 | 1.3 - 1.5 | 9.4 - 10.8 |
| Cylinder head cover bolt | [3.9 - 5.9] + [7.8 - 9.8] | [0.4 - 0.6] + [0.8 - 1.0] | [2.9 - 4.3] + [5.8 - 7.2] |
| Oil control solenoid (OCS) bolt | 9.8 - 11.8 | 1.0 - 1.2 | 7.2 - 8.7 |
| Intake OCV & center bolt | [47.1 - 52.0 ] + [25°- 31°] | [4.8 - 5.3] + [25 - 31°] | [34.7 - 38.3] + [25° - 31°] |
| Exhaust CVVT sprocket bolt | 63.7 - 73.5 | 6.5 - 7.5 | 47.0 - 54.2 |
| Camshaft bearing cap bolt (M6) | 11.8 - 12.7 | 1.2 - 1.3 | 8.7 - 9.4 |
| Camshaft bearing cap bolt (M8) | 18.6 - 22.6 | 1.9 - 2.3 | 13.7 - 16.6 |
| Cylinder head bolt (P/N : 22320-03000) | [14.7] + [90°] + [120°] | [1.5] + [90°] + [120°] | [10.8] + [90°] + [120°] |
| Cylinder head bolt (P/N : 22320-03HA0) | [14.7] + [120°] + [120°] | [1.5] + [120°] + [120°] | [10.8] + [120°] + [120°] |
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Cylinder block
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| Engine support bracket bolt | 39.2 - 44.1 | 4.0 - 4.5 | 28.9 - 32.5 |
| Ladder frame bolt | 18.6 - 23.5 | 1.9 - 2.4 | 13.7 - 17.4 |
| Connecting rod cap bolt | [10.8 - 14.7] + [88 - 92°] | [1.1 - 1.5] + [88 - 92°] | [8.0 - 10.8] + [88 - 92°] |
| Crankshaft main bearing cap bolt | [17.7 - 21.6] + [88 - 92°] | [1.8 - 2.2] + [88 - 92°] | [13.0 - 15.9] + [88 - 92°] |
| Fly wheel bolt (DCT) | 78.5 - 88.3 | 8.0 - 9.0 | 57.9 - 65.1 |
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Lubrication system
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| Oil filter | 11.8 - 15.7 | 1.2 - 1.6 | 8.7 - 11.6 |
| Oil pan bolt | 9.8 - 11.8 | 1.0 - 1.2 | 7.2 - 8.7 |
| Oil drain plug | 34.3 - 44.1 | 3.5 - 4.5 | 25.2 - 32.4 |
| Oil screen nut | 24.5 - 31.4 | 2.5 - 3.2 | 18.1 - 23.1 |
| Oil pressure switch | 9.8 - 11.8 | 1.0 - 1.2 | 7.2 - 8.7 |
| Oil level gauge pipe mounting bolt | 9.8 - 11.8 | 1.0 - 1.2 | 7.2 - 8.7 |
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Cooling system
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| Water pump pulley bolt | 9.8 - 11.8 | 1.0 - 1.2 | 7.2 - 8.7 |
| Water pump bolt | 18.6 - 23.5 | 1.9 - 2.4 | 13.7 - 17.4 |
| Water pump nut | 18.6 - 23.5 | 1.9 - 2.4 | 13.7 - 17.4 |
| Water temperature control assembly bolt | 18.6 - 23.5 | 1.9 - 2.4 | 13.7 - 17.4 |
| Water inlet fitting nut | 18.6 - 23.5 | 1.9 - 2.4 | 13.7 - 17.4 |
| Pipe bolt | 18.6 - 23.5 | 1.9 - 2.4 | 13.7 - 17.4 |
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Intake and exhaust system
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| Air intake hose clamp bolt | 2.9 - 4.9 | 0.3 - 0.5 | 2.2 - 3.6 |
| Air cleaner assembly mounting bolt | 3.9 - 5.9 | 0.4 - 0.6 | 2.9 - 4.3 |
| Electronic throttle control (ETC) module bolt | 9.8 - 11.8 | 1.0 - 1.2 | 7.2 - 8.7 |
| Intake manifold nut | 18.6 - 23.5 | 1.9 - 2.4 | 13.7 - 17.4 |
| Intake manifold bolt | 18.6 - 23.5 | 1.9 - 2.4 | 13.7 - 17.4 |
| Exhaust manifold heat protector bolt | 9.8 - 11.8 | 1.0 - 1.2 | 7.2 - 8.7 |
| Exhaust manifold stay bolt | 39.2 - 49.0 | 4.0 - 5.0 | 28.9 - 36.2 |
| Exhaust manifold nut | 34.3 - 39.2 | 3.5 - 4.0 | 25.3 - 28.9 |
| Oxygen sensor (front/rear) | 39.2 - 49.0 | 4.0 - 5.0 | 28.9 - 36.2 |
| Catalytic converter / muffler nut | 39.2 - 58.8 | 4.0 - 6.0 | 28.9 - 43.4 |
| EGR cooler bolt | 18.6 - 23.5 | 1.9 - 2.4 | 13.7 - 17.4 |
| EGR cooler pipe bolt | 18.6 - 23.5 | 1.9 - 2.4 | 13.7 - 17.4 |
| EGR cooler pipe nut | 29.4 - 34.3 | 3.0 - 3.5 | 21.7 - 25.3 |
High voltage shut-off procedures
High Voltage Shut-off Procedures
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Be sure to read and follow the "General Safety Information and Caution" before doing any work related with the high voltage system...
Repair procedures
Compression Pressure Inspection
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If there is lack of power, excessive oil consumption or poor fuel economy, measure te compression pressure...
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Side view mirror control
Adjusting the side mirrors:
1. Press either the L (driver's side) or R (passenger's side) button (1) to select the side view mirror you would like to adjust.
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