Hyundai Sonata LF: General Information / Specifications

Hyundai Sonata LF 2014-2019 Service Manual / Engine Mechanical System / General Information / Specifications

Specifications
Description
Specifications
Limit
General
Type
In-line, DOHC
?
Number of cylinders
4
?
Bore
77mm (3.0315in)
?
Stroke
85.44mm (3.3638in)
?
Total displacement
1,591 cc (97.09 cu.in)
?
Compression ratio
9.5 : 1
?
Firing order
1-3-4-2
?
Valve timing
Intake valve
Opens
ATDC 8°/BTDC 42°
?
Closes
ABDC 69°/ABDC 19°
?
Exhaust valve
Opens
BBDC 40°/BBDC 0°
?
Closes
ATDC 3°/ATDC 43°
?
Cylinder head
Flatness of gasket surface
Less than 0.05mm (0.0020in) for total area
Less than 0.02mm (0.0008in) for a section of 100mm (3.9370in) X 100mm (3.9370in)
?
Camshaft
Cam height
Intake
44.15mm (1.7382in)
?
Exhaust
42.90mm (1.6889in)
?
Journal outer diameter (Intake, Exhaust)
NO1 : 36.464 ~ 36.48mm
NO2 : 22.964 ~ 22.980mm
?
Camshaft cap oil clearance
0.027 ~ 0.058mm (0.0011 ~ 0.0023in)
0.1mm (0.0039in)
End play
0.10 ~ 0.20mm (0.0039 ~ 0.0079in)
?
Valve
Valve length
Intake
93.15mm (3.6673in)
?
Exhaust
92.60mm (3.6457in)
?
Stem outer diameter
Intake
5.465 ~ 5.480mm (0.2152 ~ 0.2157in)
?
Exhaust
5.458 ~ 5.470mm (0.2149 ~ 0.2154in)
?
Face angle
45.25° ~ 45.75°
?
Thickness of valve head (margin)
Intake
1.10mm (0.0433in)
0.8mm (0.0315in)
Exhaust
1.26mm (0.0496in)
1.0mm (0.0394in)
Valve stem to valve guide clearance
Intake
0.020 ~ 0.047mm (0.0008 ~ 0.0019in)
0.10mm (0.0039in)
Exhaust
0.030 ~ 0.054mm (0.0012 ~ 0.0021in)
0.15mm (0.0059in)
Valve guide
Length
Intake
40.3 ~ 40.7mm (1.5866 ~ 1.6024in)
?
Exhaust
40.3 ~ 40.7mm (1.5866 ~ 1.6024in)
?
Valve spring
Free length
45.1mm (1.7756in)
?
Out of squareness
Less than 1.5°
?
Cylinder block
Cylinder bore
77.00 ~ 77.03mm (3.0315 ~ 3.0327in)
?
Flatness of gasket surface
Less than 0.05mm (0.0020in) for total area
Less than 0.02mm (0.0008in) for a section of 100mm (3.9370in) X 100mm (3.9370in)
?
Piston
Piston outer diameter
76.97 ~ 77.00mm (3.0303 ~ 3.0315in)
?
Piston to cylinder clearance
0.020 ~ 0.040mm (0.0008 ~ 0.0016in)
?
Ring groove width
No. 1 ring groove
1.23 ~ 1.25mm (0.0484 ~ 0.0492in)
1.26mm (0.0496in)
No. 2 ring groove
1.53 ~ 1.55mm (0.0602 ~ 0.0610in)
1.26mm (0.0496in)
Oil ring groove
2.01 ~ 2.03mm (0.0791 ~ 0.0799in)
2.05mm (0.0807in)
Piston ring
Side clearance
No.1 ring
0.04 ~ 0.08mm (0.0016 ~ 0.0031in)
0.1 mm (0.0039in)
No.2 ring
0.04 ~ 0.08mm (0.0016 ~ 0.0031in)
0.1 mm (0.0039in)
Oil ring
0.02 ~ 0.06mm (0.0008 ~ 0.0024in)
0.2 mm (0.0079in)
End gap
No. 1 ring
0.14 ~ 0.28mm (0.0055 ~ 0.0110in)
0.30mm (0.0118in)
No. 2 ring
0.30 ~ 0.45mm (0.0118 ~ 0.0177in)
0.50mm (0.0197in)
Oil ring
0.20 ~ 0.40mm (0.0079 ~ 0.0157in)
0.80mm (0.0315in)
Piston pin
Piston pin outer diameter
19.997 ~ 20.000mm (0.7872 ~ 0.7874in)
?
Piston pin hole inner diameter
20.004 ~ 20.010mm (0.7875 ~ 0.7877in)
?
Piston pin hole clearance
0.004 ~ 0.013mm (0.0001 ~ 0.0005in)
?
Connecting rod small end hole inner diameter
20.005 ~ 20.016mm (0.7875 ~ 0.7880in)
?
Connecting rod
Connecting rod big end inner diameter
45.000 ~ 45.018mm (1.7717 ~ 1.7724in)
?
Connecting rod bearing oil clearance
0.018 ~ 0.036mm (0.0007 ~ 0.0014in)
0.060mm (0.0024in)
Side clearance
0.10 ~ 0.25mm (0.0039 ~ 0.0098in)
0.35m (0.0138in)
Crankshaft
Main bearing oil clearance
No. 1, 2, 3, 4, 5
0.0006 ~ 0.024mm (0.0002 ~ 0.0009in)
0.05mm (0.0020in)
End play
0.05 ~ 0.25mm (0.0020 ~ 0.0098in)
0.3mm (0.0118in)
Engine oil
Oil quantity
Total
4.6 ~ 4.9L (1.21 ~ 1.29 U.S.gal., 4.86 ~ 5.17 U.S.qt., 4.04 ~ 4.30 lmp.qt.)
When replacing a short engine or a block assembly
Oil pan
4.2 L (1.10 U.S.gal., 4.43 U.S.qt., 1.10 lmp.qt.)
?
Drain and refill
4.5 L (1.18 U.S.gal., 4.75 U.S.qt., 3.95 lmp.qt.)
Including oil filter
Oil grade
Recommendation
ACEA A5 or above/ 5W-30
(ZIC LD 5W-30, KIXX G1 LL, QUARTZ HKS G-310, QUARTZ INEO MC3 5W-30, HELIX ULTRA AH-E 5W-30, HELIX ULTRA 5W-40, TITAN SUPERSYN LONG LIFE 5W-30/40)
SAE viscosity grade
Recommended SAE viscosity number
?
Oil pressure (at 1000rpm)
100kPa (1.0kg/cm?, 14.5psi) or above
Oil temperature in oil pan : 110±2°C (230± 36°F)
Cooling system
Cooling method
Forced circulation with cooling fan
?
Coolant quantity
7.1 L (1.87 U.S.gal., 7.50 U.S.qt., 6.24 lmp.qt.)
?
Thermostat
Type
Wax pellet type
?
Opening temperature
82 ± 1.5°C (179.6 ± 2.7°F)
?
Full opening temperature
95°C (203°F)
?
Radiator cap
Main valve opening pressure
93.16 ~ 122.58kpa
(0.95 ~ 1.25kgf/cm?, 13.51 ~ 17.78psi)
?
Vacuum valve opening pressure
MAX. 6.86 kpa(0.07kgf/cm?, 1.00 psi)
?
Water temperature sensor
Type
Thermister type
?
Resistance
20°C (68°F)
2.45±0.14 k?
?
80°C (176°F)
0.3222 k?
?

Tightening Torques
Item
N.m
kgf.m
lb-ft
Engine mounting
Engine mounting bracket to body fixing bolt
68.6 ~ 88.3
7.0 ~ 9.0
50.6 ~ 65.1
Engine mounting support bracket to engine mounting insulator fixing nut
88.3 ~ 107.9
9.0 ~ 11.0
65.1 ~ 79.6
Engine mounting support bracket to engine support bracket fixing bolt
88.3 ~ 107.9
9.0 ~ 11.0
65.1 ~ 79.6
Engine mounting support bracket to engine support bracket fixing nut
88.3 ~ 107.9
9.0 ~ 11.0
65.1 ~ 79.6
Transaxle mounting bracket to body fixing bolt
68.6 ~ 88.3
7.0 ~ 9.0
50.6 ~ 65.1
Transaxle mounting insulator to transaxle mounting support bracket fixing bolt
107.9 ~ 127.5
11.0 ~ 13.0
79.6 ~ 94.0
Roll rod bracket to sub frame fixing bolt
49.0 ~ 63.7
5.0 ~ 6.5
36.2 ~ 47.0
Roll rod insulator to roll rod mounting support bracket fixing nut
107.9 ~ 127.5
11.0 ~ 13.0
79.6 ~ 94.0
Timing system
Timing chain and oil pump assembly cover bolt (M6x20)
9.8 ~ 11.8
1.0 ~ 1.2
7.2 ~ 8.7
Timing chain and oil pump assembly cover bolt (M6x38)
9.8 ~ 11.8
1.0 ~ 1.2
7.2 ~ 8.7
Timing chain and oil pump assembly cover bolt (M6x70)
9.8 ~ 11.8
1.0 ~ 1.2
7.2 ~ 8.7
Timing chain and oil pump assembly cover bolt (M8x22)
18.6 ~ 23.5
1.9 ~ 2.4
13.7 ~ 17.4
Idler pulley assemlby bolt
42.2 ~ 53.9
4.3 ~ 5.5
31.1 ~ 39.8
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 pulley bolt
[47.0 ~ 50.9] + [38°~ 42°]
[4.8 ~ 5.2] + [38°~ 42°]
[34.7 ~ 37.6] + [38°~ 42°]
Engine support bracket bolt
29.4 ~ 41.1
3.0 ~ 4.2
21.6 ~ 30.3
Timing chain tensioner bolt
9.8 ~ 11.8
1.0 ~ 1.2
7.2 ~ 8.7
Cylinder head
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]
Camshaft bearing cap bolt (M6)
[5.9] + [11.8~13.7]
[0.6] + [1.2~1.4]
[4.3] + [8.7~10.1]
Camshaft bearing cap bolt (M8)
18.6 ~ 22.6
1.9 ~ 2.3
13.7 ~ 16.6
Cylinder head bolt
[29.4] + [90°] + [90°]
[3.0] + [90°] + [90°]
[21.7] + [90°] + [90°]
CVVT assembly mounting bolt
63.7 ~ 73.5
6.5 ~ 7.5
47.0 ~ 54.2
OCV (Oil control valve) bolt
9.8 ~ 11.8
1.0 ~ 1.2
7.2 ~ 8.7
Exhaust OCV (Oil control valve) adaptor bolt
9.8 ~ 11.8
1.0 ~ 1.2
7.2 ~ 8.7
Cylinder block
Engine support bracket bolt
29.4 ~ 41.2
3.0 ~ 4.2
21.7 ~ 30.4
Ladder frame bolt
18.6 ~ 23.5
1.9 ~ 2.4
13.7 ~ 17.4
Connecting rod cap bolt
[17.7~21.6] + [88~92°]
[1.8~2.2] + [88~92°]
[13.0~15.9] + [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°]
External damper flywheel
71.6 ~ 75.5
7.3 ~ 7.7
52.8 ~ 55.7
Lubrication system
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 pan drain plug
34.3 ~ 44.1
3.5 ~ 4.5
25.3 ~ 32.5
Oil screen bolt
19.6 ~ 26.5
2.0 ~ 2.7
14.5 ~ 19.5
Oil pressure switch
7.8 ~ 11.8
0.8 ~ 1.2
5.8 ~ 8.7
Oil level gauge assembly mounting bolt
9.8 ~ 11.8
1.0 ~ 1.2
7.2 ~ 8.7
Cooling system
Water pump pulley bolt
9.8 ~ 11.8
1.0 ~ 1.2
7.2 ~ 8.7
Water pump bolt
9.8 ~ 11.8
1.0 ~ 1.2
7.2 ~ 8.7
Water temperature control assembly mounting bolt
9.8 ~ 11.8
1.0 ~ 1.2
7.2 ~ 8.7
Water inlet fitting nut
18.6 ~ 23.5
1.9~ 2.4
13.7 ~ 17.4
Water pipe mounting bolt (M6)
9.8 ~ 11.8
1.0 ~ 1.2
7.2 ~ 8.7
Water pipe mounting nut
9.8 ~ 11.8
1.0 ~ 1.2
7.2 ~ 8.7
Water pipe mounting bolt (M8)

Repair procedures

Compession Pressure Inspection     If the there is lack of power, excessive oil consumption or poor fuel economy, measure the compression pressure...

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Hyundai Sonata LF 2014-2019 Service Manual: Cylinder Head Repair procedures


Removal Engine removal is not required for this procedure.     • Use fender covers to avoid damaging painted surfaces. • To avoid damaging the cylinder head, wait until the engine coolant temperature drops below normal temperature before removing it...

Hyundai Sonata LF 2014-2019 Service Manual: Fuel Pump Repair procedures


Inspection [Fuel sender] 1. Turn the ignition switch OFF, and then remove battery (-) cable. 2. Remove the fuel pump assembly. 3. Using an ohmmeter, measure the resistance between terminals 1 and 6 of sender connector (A) at each float level...

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