Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSKIA2010FORTE EX, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE MECHANICALMECHANICALGENERAL INFORMATION (ENGINE MECHANICAL SYSTEM)SPECIFICATIONS
2010 Kia Forte EX, Standard
General Specifications
2010 Kia Forte EX, StandardSECTION Specifications
GENERAL SPECIFICATIONS
| Description | Specifications | Limit | |||
|---|---|---|---|---|---|
| 2.0 | 2.4 | ||||
| General | |||||
| Type | In-line, Double Overhead Camshaft | ||||
| Number of cylinder | 4 | ||||
| Bore | 86mm (3.385in) | 88mm (3.464in) | |||
| Stroke | 86mm (3.385in) | 97mm (3.819in) | |||
| Total displacement | 1998cc (121.92cu.in) | 2359cc (143.90cu.in) | |||
| Compression ratio | 10.5 | ||||
| Firing order | 1-3-4-2 | ||||
| Valve timing | |||||
| Intake valve | |||||
| Opens (ATDC/BTDC) | ATDC 7° ~ BTDC 38° | ||||
| Closes (ABDC) | ABDC 63° ~ 18° | ABDC 67° ~ 22° | |||
| Exhaust | |||||
| Opens (BBDC) | BBDC 38° | BBDC 44° ~ 4° | |||
| Closes (ATDC) | ATDC 6° | ATDC 0° ~ 40° | |||
| Valve | |||||
| Valve length | |||||
| Intake | 113.18mm (4.4559in.) | 112.93mm (4.4460in) | |||
| Exhaust | 105.84mm (4.1669in.) | 105.59mm (4.1570in) | |||
| Stem O.D. | |||||
| Intake | 5.465 ~ 5.480mm (0.2151 ~ 0.2157in.) | ||||
| Exhaust | 5.458 ~ 5.470mm (0.2149 ~ 0.2153in.) | ||||
| Face angle | 45.25° ~ 45.75° | ||||
| Margin | |||||
| Intake | 1.02mm (0.0401in.) | ||||
| Exhaust | 1.09mm (0.0429in.) | ||||
| Valve stem to valve guide clearance | |||||
| Intake | 0.020 ~ 0.047mm (0.00078 ~ 0.00185in.) | 0.07mm (0.00275in.) | |||
| Exhaust | 0.030 ~ 0.054mm (0.00118 ~ 0.00212in.) | 0.09mm (0.00354in.) | |||
| Valve guide | |||||
| Length | |||||
| Intake | 43.8 ~ 44.2mm (1.7244 ~ 1.7401in.) | ||||
| Exhaust | 43.8 ~ 44.2mm (1.7244 ~ 1.7401in.) | ||||
| Valve guide I.D | 5.500 ~ 5.512mm (0.2165 ~ 0.2170in.) | ||||
| Valve seat | |||||
| Width of seat contact | |||||
| Intake | 1.16 ~ 1.46mm (0.0457 ~ 0.0575in.) | ||||
| Exhaust | 1.35 ~ 1.65mm (0.0531 ~ 0.0649in.) | ||||
| Seat angle | 44.75° ~ 45.10° | ||||
| Valve spring | |||||
| Free length | 47.44mm (1.8677in.) | ||||
| Load | 19.0 ± 0.6kg/35.0mm (41.88 ± 1.32lb/1.3779in | ||||
| 39.8 ± 1.2kg/26.0mm (87.74 ± 2.64lb/1.0236in.) | |||||
| Squareness | 1.5° MAX. | ||||
| Valve clearance | |||||
| Cold (20°C[68°F]) | |||||
| Intake | 0.17 ~ 0.23mm (0.0067 ~ 0.0090in.) | 0.10 ~ 0.30mm (0.0039 ~ 0.0118in.) | |||
| Exhaust | 0.27 ~ 0.33mm (0.0106 ~ 0.0129in,) | 0.20 ~ 0.40mm (0.0078 ~ 0.0157in.) | |||
| Cylinder head | |||||
| Flatness of gasket surface | Max. 0.05mm (0.0019in.) | ||||
| Flatness of manifold mounting surface | Max. 0.10mm (0.0039in.) | ||||
| Cylinder block | |||||
| Cylinder bore | 86.00 ~ 86.03mm (3.3858 ~ 3.3870in.) | 88.00 ~ 88.03mm (3.4645 ~ 3.4657in.) | |||
| Out-of-round and taper of cylinder bore | Less than 0.05mm (0.0019in.) | ||||
| Clearance with piston (To set limits to new parts) | 0.015 ~ 0.035mm (0.0005 ~ 0.0013in.) | ||||
| Piston | |||||
| O.D (To set limits to new parts) | 85.975 ~ 86.0050mm (3.3848 ~ 3.3860in.) | 87.975 ~ 88.005mm (3.4635 ~ 3.4647in.) | |||
| Ring groove width | |||||
| No. 1 | 1.235 ~ 1.250mm (0.0486 ~ 0.0492in.) | 1.26mm (0.0496in.) | |||
| No. 2 | 1.230 ~ 1.250mm (0.0484 ~ 0.0492in.) | 1.26mm (0.0496in.) | |||
| Oil ring | 2.01 ~ 2.03mm (0.0791 ~ 0.0799in.) | 2.05mm (0.0807in.) | |||
| Piston ring | |||||
| Side clearance | |||||
| No. 1 | 0.05 ~ 0.08mm (0.0019 ~ 0.0031in.) | 0.1mm (0.004in.) | |||
| No. 2 | 0.04 ~ 0.08mm (0.0015 ~ 0.0031in.) | 0.1mm (0.004in.) | |||
| Oil ring | 0.06 ~ 0.15mm (0.0023 ~ 0.0059in.) | 0.2mm (0.008in.) | |||
| End gap | |||||
| No. 1 | 0.15 ~ 0.30mm (0.0059 ~ 0.0118in.) | 0.6mm (0.0236in.) | |||
| No. 2 | 0.37 ~ 0.52mm (0.0145 ~ 0.0204in.) | 0.7mm (0.0275in.) | |||
| Oil ring side rail | 0.20 ~ 0.70mm (0.0078 ~ 0.0275in.) | 0.8mm (0.0315in.) | |||
| Connecting rod | |||||
| Bend | 0.05mm (0.0020in.) or less | ||||
| Twist | 0.1mm (0.004in.) or less | ||||
| Connecting rod big end to crankshaft side clearance | 0.100 ~ 0.250mm (0.0039 ~ 0.010in.) | 0.35mm (0.0138in.) | |||
| Connecting rod bearing | |||||
| Oil clearance (To seat limits to new parts) | 0.027 ~ 0.045mm (0.0010 ~ 0.0017in.) | 0.05mm (0.0078in.) | |||
| Camshaft | |||||
| Cam height | Intake | 43.8mm (1.7244in.) | 44.2mm (1.7401in.) | ||
| Exhaust | 45.00mm (1.7716in.) | 45.0mm (1.7716in.) | |||
| Journal O.D | Intake | No. 1 | □ 30mm (1.1811in.) | ||
| No. 2, 3, 4, 5 | □ 24mm (0.9449in.) | ||||
| Exhaust | No. 1 | □ 40mm (1.5748in.) | □ 36mm (1.4173in.) | ||
| No. 2, 3, 4, 5 | □ 24mm (0.9449in.) | ||||
| Bearing oil clearance | Intake | No. 1 | 0.022 ~ 0.057mm (0.0008 ~ 0.0022in.) | 0.09mm (0.0035in.) | |
| No. 2, 3, 4, 5 | 0.045 ~ 0.082mm (0.0017 ~ 0.0032in.) | 0.12mm (0.0047in.) | |||
| Exhaust | No. 1 | 0.045 ~ 0.082mm (0.0017 ~ 0.0032in.) | 0 ~0.032mm (0 ~ 0.0012in.) | 0.12mm (0.0047in.) | |
| No. 2, 3, 4, 5 | 0.045 ~ 0.082mm (0.0017 ~ 0.0032in.) | ||||
| End play | 0.04 ~ 0.16mm (0.0015 ~ 0.0062in.) | 0.18mm (0.0071in.) | |||
| Crankshaft | |||||
| Pin O.D. | 47.954 ~ 47.972mm (1.8879 ~ 1.8886in.) | ||||
| Journal O.D. | 51.942 ~ 51.960mm (2.0449 ~ 2.0456in.) | ||||
| End play | 0.07 ~ 0.25mm (0.0027 ~ 0.0098in.) | ||||
| Crankshaft bearing | |||||
| Oil clearance | 0.020 ~ 0.038mm (0.0007 ~ 0.0014in.) | 0.1mm (0.0039in.) | |||
| Radiator | |||||
| Type | Pressurized corrugated fin type | ||||
| Cooling method | Water-cooled, pressurized. Forced circulation with water pump | ||||
| Radiator cap | |||||
| Main valve opening pressure | 83 ~ 110kpa (12 ~ 16psi, 0.83 ~ 1.1kg/cm2 ) | ||||
| Vacuum valve opening pressure | -7kpa (-100psi, -0.07kg/cm2 ) or less | ||||
| Thermostat | |||||
| Type | Wax pellet type with jiggle valve | ||||
| Valve opening temperature | 82°C (177°F) | ||||
| Full-opening temperature | 95°C (201°F) | ||||
| Coolant pump | Centrifugal type impeller | ||||
| Engine oil | |||||
| Oil quantity | Total | 4.7L (4.97US qt, 4.13lmp qt) | 5.4L (5.71US qt, 4.75lmp qt) | When replacing a short engine or a block assembly | |
| Oil pan | 3.8L (4.01US qt, 3.34lmp qt) | 4.2L (4.44US qt, 3.69lmp qt) | |||
| Drain and refill | 4.1L (4.33US qt, 3.61lmp qt) | 4.5L (4.76US qt, 3.96lmp qt) | Including oil filter | ||
| Oil grade | Recommendation | 5W-20/GF4 & SM | If not available, refer to SELECTION OF ENGINE OIL for recommended API or ILSAC classification and SAE viscosity number. | ||
| Classification | API SL, SM or above ILSAC GF3, GF4 or above | Satisfy the requirement of the API or ILSAC classification. | |||
| SAE viscosity grade | Recommended SAE viscosity number | Refer to SELECTION OF ENGINE OIL | |||
| Oil pressure (at 1000rpm) | 108kPa (1.1kg/cm2 , 15.6psi) or above | 147kPa (1.5kg/cm2 , 21.3psi) or above | Oil temperature in oil pan : 110±2°C (230±36°F) | ||
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.