Engine Mechanical - General Information — Hyundai Santa Fe III (2012-2016)

Specifications

Description			Specifications	Limit
General
Type			V-type, DOHC
Number of cylinders			6
Bore			92 mm (3.6220 in.)
Stroke			83.8 mm (3.2992 in.)
Total displacement			3, 342 cc (203.94 cu.in.)
Compression ratio			11.5: 1
Firing order			1-2-3-4-5-6
Valve timing
Intake	Opens (ATDC)		10°
Intake	Closes (ABDC)		70°
Exhaust	Opens (BBDC)		52°
Exhaust	Closes (ATDC)		0°
Cylinder head
Flatness of gasket surface			Less than 0.05 mm (0.0019 in.) [Less than 0.02 mm (0.0008 in.)/150x150]
Flatness of manifold mounting	Intake		Less than 0.1 mm (0.0039 in.) [Less than 0.03 mm (0.001 in.)/110x110]
Flatness of manifold mounting	Exhaust		Less than 0.1 mm (0.0039 in.) [Less than 0.03 mm (0.001 in.)/110x110]
Camshaft
Cam height	LH Camshaft	Intake	46.6 mm (1.835 in.)
	LH Camshaft	Exhaust	45.8 mm (1.8031 in.)
	RH Camshaft	Intake	46.6 mm (1.835 in.)
	RH Camshaft	Exhaust	45.8 mm (1.8031 in.)
Journal outer diameter	LH, RH camshaft	Intake	No. 1: 27.964 ~ 27.978 mm (1.1009 ~ 1.1015 in.) No. 2, 3, 4: 23.954 ~ 23.970 mm (0.9430 ~ 0.9437 in.)
Journal outer diameter	LH, RH camshaft	Exhaust	No. 1: 27.964 ~ 27.978 mm (1.1009 ~ 1.1015 in.) No. 2, 3, 4: 23.954 ~ 23.970 mm (0.9430 ~ 0.9437 in.)
Bearing oil clearance	LH, RH camshaft	Intake	No. 1: 0.027 ~ 0.057 mm (0.0011 ~ 0.0022 in.) No. 2, 3, 4: 0.030 ~ 0.067 mm (0.0012 ~ 0.0026 in.)
Bearing oil clearance	LH, RH camshaft	Exhaust	No. 1: 0.027 ~ 0.057 mm (0.0011 ~ 0.0022 in.) No. 2, 3, 4: 0.030 ~ 0.067 mm (0.0012 ~ 0.0026 in.)
End play			0.02 ~ 0.18 mm (0.0008 ~ 0.0071 in.)
Valve
Valve length	Intake		105.27 mm (4.1445 in.)
Valve length	Exhaust		105.50 mm (4.1535 in.)
Stem outer diameter	Intake		5.465 ~ 5.480 mm (0.2151 ~ 0.2157 in.)
Stem outer diameter	Exhaust		5.458 ~ 5.470 mm (0.2149 ~ 0.2153 in.)
Face angle			45.25° ~ 45.75°
Thickness of valve head (margin)	Intake		1.56 ~ 1.86 mm (0.06142 ~ 0.07323 in.)
Thickness of valve head (margin)	Exhaust		1.73 ~ 2.03 mm (0.06811 ~ 0.07992 in.)
Valve stem to valve guide clearance	Intake		0.020 ~ 0.047 mm (0.00078 ~ 0.00185 in.)	0.07 mm (0.00275 in.)
Valve stem to valve guide clearance	Exhaust		0.030 ~ 0.054 mm (0.00118 ~ 0.00212 in.)	0.09 mm (0.00354 in.)
Valve guide
Inner diameter	Intake		5.500 ~ 5.512 mm (0.2165 ~ 0.2170 in.)
Inner diameter	Exhaust		5.500 ~ 5.512 mm (0.2165 ~ 0.2170 in.)
Length	Intake		41.8 ~ 42.2 mm (1.6457 ~ 1.6614 in.)
Length	Exhaust		41.8 ~ 42.2 mm (1.6457 ~ 1.6614 in.)
Valve seat
Width of seat contact	Intake		1.15 ~ 1.45 mm (0.05118 ~ 0.05709 in.)
Width of seat contact	Exhaust		1.35 ~ 1.65 mm (0.05315 ~ 0.06496 in.)
Seat angle	Intake		44.75° ~ 45.20°
Seat angle	Exhaust		44.75° ~ 45.20°
Valve spring
Free length			45.5 mm (1.7913 in.)
Load			19.0±0.8 kg/34.0 mm (41.9±1.8 lb/1.3386 in.)
Load			42.3±1.3 kg/23.8 mm (93.3±2.9 lb/0.9370 in.)
Out of squareness			Less than 1.5°
MLA
MLA outer diameter	Intake		34.964 ~ 34.980 mm (1.3765 ~ 1.3772 in.)
MLA outer diameter	Exhaust		34.964 ~ 34.980 mm (1.3765 ~ 1.3772 in.)
Cylinder head tappet bore inner diameter	Intake		35.000 ~ 35.025 mm (1.3779 ~ 1.3789 in.)
Cylinder head tappet bore inner diameter	Exhaust		35.000 ~ 35.025 mm (1.3779 ~ 1.3789 in.)
MLA to tappet bore clearance	Intake		0.020 ~ 0.061 mm (0.0008 ~ 0.0024 in.)	0.07 mm (0.0027 in.)
MLA to tappet bore clearance	Exhaust		0.020 ~ 0.061 mm (0.0008 ~ 0.0024 in.)	0.07 mm (0.0027 in.)
Valve clearance (At 20°C [68°F])
Intake			0.17 ~ 0.23 mm (0.0067 ~ 0.0090 in.)	0.10 ~ 0.30 mm
Exhaust			0.27 ~ 0.33 mm (0.0106 ~ 0.0129 in.)	0.20 ~ 0.40 mm
Cylinder block
Cylinder bore			92.00 ~ 92.03 mm (3.6220 ~ 3.6232 in.)
Flatness of gasket surface			Less than 0.05 mm (0.0019 in.) [Less than 0.02 mm (0.0008 in.)/150x150]
Piston
Piston outer diameter			91.96 ~ 91.99 mm (3.6204 ~ 3.6216 in.)
Piston to cylinder clearance			0.03 ~ 0.05 mm (0.0012 ~ 0.0020 in.)
Ring groove width	No. 1 ring groove		1.23 ~ 1.25 mm (0.0484 ~ 0.0492 in.)
	No. 2 ring groove		1.23 ~ 1.25 mm (0.0484 ~ 0.0492 in.)
	Oil ring groove		2.01 ~ 2.03 mm (0.0791 ~ 0.0797 in.)
Piston ring
Side clearance	No. 1 ring		0.04 ~ 0.08 mm (0.0015 ~ 0.0031 in.)	0.1 mm (0.004 in.)
	No. 2 ring		0.04 ~ 0.08 mm (0.0015 ~ 0.0031 in.)	0.1 mm (0.004 in.)
	Oil ring		0.02 ~ 0.06 mm (0.0008 ~ 0.0024 in.)	0.2 mm (0.008 in.)
End gap	No. 1 ring		0.17 ~ 0.32 mm (0.0067 ~ 0.0126 in.)	0.6 mm (0.0236 in.)
	No. 2 ring		0.37 ~ 0.52 mm (0.0145 ~ 0.0204 in.)	0.7 mm (0.0275 in.)
	Oil ring		0.20 ~ 0.40 mm (0.0078 ~ 0.0157 in.)	0.8 mm (0.0315 in.)
Piston pin
Piston pin outer diameter			21.097 ~ 22.000 mm (0.8305 ~ 0.8661 in.)
Piston pin hole inner diameter			22.004 ~ 22.010 mm (0.8662 ~ 0.8665 in.)
Piston pin hole clearance			0.004 ~ 0.013 mm (0.00015 ~ 0.00051 in.)
Connecting rod small end inner diameter			22.005 ~ 22.016 mm (0.8663 ~ 0.8667 in.)
Connecting rod small end hole clearance			0.005 ~ 0.019 mm (0.00019 ~ 0.00074 in.)
Connecting rod
Connecting rod big end inner diameter			58.000 ~ 58.018 mm (2.2834 ~2.2842 in.)
Connecting rod bearing oil clearance			0.040 ~ 0.062 mm (0.0016 ~0.0024 in.)
Side clearance			0.1 ~ 0.25 mm (0.0039 ~ 0.0098 in.)
Crankshaft
Main journal outer diameter			68.942 ~ 68.960 mm (2.7142 ~ 2.7149 in.)
Pin journal outer diameter			54.954 ~ 54.972 mm (2.1635 ~ 2.1642 in.)
Main bearing oil clearance			0.022 ~ 0.040 mm (0.0008 ~ 0.0016 in.)
End play			0.10 ~ 0.28 mm (0.0039 ~ 0.0110 in.)
Oil pump
Regulating pressure			5.0 ~ 5.5 bar
Engine oil
Oil quantity	Total		6.5 L (6.87 U.S qt., 5.71 lmp.qt., 1.71 U.S.gal.)	Total Engine oil
Oil grade	Oil pan		6.0 L (6.34 U.S qt., 5.28 lmp.qt., 1.58 U.S.gal.)
	Drain and refill		5.7 L (6.02 U.S.qt., 5.01 lmp.qt., 1.50 U.S.gal.)	Including oil filter
	Oil grade		Recommendation	5W-30/ACEA A5 If not available, refer to the recommended API, ILSAC or ACEA classification and SAE viscosity number.
	Classification		API SM or above ILSAC GF4 or above ACEA A5 or above (Only approved engine oil by Hyundai)	If not available, API SL, ILSAC GF3, ACEA A3 can be used.
	SAE viscosity grade		Recommended SAE viscosity number	Refer to the "Lubrication System"
Oil pressure (at 1000rpm)			130 kPa(1.32 kgf/cm 2 , 18.77 psi) [at 1000 RPM, 110°C (230°F)]	Oil temperature (oil pan): 110±2°C (230±35.6°F)
Cooling system
Cooling method			Forced circulation with water pump
Coolant quantity			9.1 L (9.6 Us.qts, 8.0 lmp, 2.4 qts)
Thermostat	Type		Wax pellet type
	Opening temperature		88±2°C (190.4±3.6°F)
	Fully opened temperature		100°C (212°F)
	Full lift		10 mm (0.3937 in.) MIN
Radiator cap	Main valve opening pressure		79.43 ~ 122.58 kpa (0.81 ~ 1.25 kg/cm 2 , 11.52 ~ 17.78 psi)
Radiator cap	Vacuum valve opening pressure		0 ~ 6.86 kpa (0 ~ 0.07 kg/cm 2 , 0 ~ 0.99 psi)
Water temperature sensor
Type			Thermister type
Resistance	20°C (68°F)		2.31 ~ 2.59 Kohms
Resistance	80°C(176°F)		0.3222 Kohms

Sealant

Description	Specifications
Cylinder head and cylinder block between gap	THREE BOND 1217H
Timing chain cover
Cylinder head cover
Cylinder head
Oil seal case
Lower oil pan
Upper oil pan
Oil pressure switch	THREE BOND 2403

Tightening Torques

Item	Quantity	N.m	Kgf.m	Lb-ft
Engine Mounting
Engine mounting bracket to body fixing bolts	4	63.7 ~ 83.4	6.5 ~ 8.5	47.0 ~ 61.5
Engine mounting support bracket to engine mounting insulator fixing nut	1	88.3 ~ 107.9	9.0 ~ 11.0	65.1 ~ 79.6
Engine mounting support bracket to engine support bracket fixing bolts	2	88.3 ~ 107.9	9.0 ~ 11.0	65.1 ~ 79.6
Engine mounting support bracket to engine support bracket fixing nut	1	88.3 ~ 107.9	9.0 ~ 11.0	65.1 ~ 79.6
Transaxle mounting bracket to body fixing bolts	3	63.7 ~ 83.4	6.5 ~ 8.5	47.0 ~ 61.5
Transaxle mounting bracket to body fixing nut	1	63.7 ~ 83.4	6.5 ~ 8.5	47.0 ~ 61.5
Transaxle support bracket to transaxle mounting bracket fixing bolts	2	88.3 ~ 107.9	9.0 ~ 11.0	65.1 ~ 79.6
Roll rod bracket to sub frame fixing bolts	2	49.0 ~ 63.7	5.0 ~ 6.5	36.2 ~ 47.0
Roll rod insulator to roll rod mounting support bracket fixing nut	1	107.9 ~ 127.5	11.0 ~ 13.0	79.6 ~ 94.0
Timing system
Drive belt idler bolt	1	53.9 ~ 57.9	5.5 ~ 5.9	39.8 ~ 42.7
Drive belt auto tensioner bolt (M12)	1	81.4 ~ 85.3	8.3 ~ 8.7	60.0 ~ 62.9
Drive belt auto tensioner bolt (M8)	1	17.7 ~ 21.6	1.8 ~ 2.2	13.0 ~ 15.9
Crankshaft pulley bolt	1	284.5 ~ 304.1	29 ~ 31	209.8 ~ 224.2
Timing chain cover bolts A	17	18.6 ~ 21.6	1.9 ~ 2.2	13.7 ~ 15.9
Timing chain cover bolts B	2	24.5 ~ 26.5	2.5 ~ 2.7	18.1 ~ 19.5
Timing chain cover bolt C	1	58.8 ~ 68.6	6.0 ~ 7.0	43.4 ~ 50.6
Timing chain cover bolt D	1	58.8 ~ 68.6	6.0 ~ 7.0	43.4 ~ 50.6
Timing chain cover bolts E	3	9.8 ~ 11.8	1.0 ~ 1.2	7.2 ~ 8.7
Timing chain auto tensioner bolts	2	9.8 ~ 11.8	1.0 ~ 1.2	7.2 ~ 8.7
Timing chain auto tensioner nuts	2	9.8 ~ 11.8	1.0 ~ 1.2	7.2 ~ 8.7
Timing chain auto tensioner arm bolts	2	18.6 ~ 21.6	1.9 ~ 2.2	13.7 ~ 15.9
Timing chain guide bolts	4	19.6 ~ 24.5	2.0 ~ 2.5	14.5 ~ 18.1
Timing chain cam to cam guide bolts	4	9.8 ~ 11.8	1.0 ~ 1.2	7.2 ~ 8.7
Cylinder head
Cylinder head cover bolts (LH/RH)	38	[4.9~5.9] + [9.8~11.8]	[0.5~0.6] + [1.0~1.2]	[3.6~4.3] + [7.2~8.7]
Continuous variable valve timing (CVVT) bolts (LH/RH)	4	64.7 ~ 76.5	6.6 ~ 7.8	47.7 ~ 56.4
Camshaft bearing cap bolts (LH/RH)	32	[5.8] + [9.8~11.8]	[0.6] + [1.0~1.2]	[4.3] + [7.2~8.7]
Cylinder head bolts (LH/RH)	16	[37.3~41.2] + [118~122°] + [88~92°]	[3.8~4.2] + [118~122°] + [88~92°]	[27.5~30.4] + [118~122°] + [88~92°]
Cylinder head bolt (RH rear)	1	18.6 ~ 23.5	1.9 ~ 2.4	13.7 ~ 17.4
Engine hanger bolts (Front)	1	44.1 ~ 53.6	4.5 ~ 5.5	32.5 ~ 39.8
Engine hanger bolts (Rear)	2	18.6 ~ 23.5	1.9 ~ 2.4	13.7 ~ 17.4
Exhaust OCV (oil control valve) bolts (LH/RH)	2	9.8 ~ 11.8	1.0 ~ 1.2	7.2 ~ 8.7
Intake OCV (oil control valve) bolts (LH/RH)	2	9.8 ~ 11.8	1.0 ~ 1.2	7.2 ~ 8.7
Fuel pump bracket bolt	4	18.6 ~ 23.5	1.9 ~ 2.4	13.7 ~ 17.4
Cylinder block
Connecting rod bolts	12	[27.5~31.3] + [68~72°]	[2.8~3.2] + [68~72°]	[20.2~23.1] + [68~72°]
Main bearing cap inner bolts (M11)	8	[49.0] + [90°]	[5.0] + [90°]	[36.2] + [90°]
Main bearing cap outer bolts (M8)	8	[19.6] + [120°]	[2.0] + [120°]	[14.5] + [120°]
Main bearing cap side bolts (M8)	8	29.4 ~ 31.4	3.0 ~ 3.2	21.7 ~ 23.1
Oil drain cover bolts	6	9.8 ~ 11.8	1.0 ~ 1.2	7.2 ~ 8.7
Oil jet bolts	3	27.5 ~ 31.3	2.8 ~ 3.2	20.2 ~ 23.1
Rear oil seal case bolts	6	9.8 ~ 11.8	1.0 ~ 1.2	7.2 ~ 8.7
Baffle plate bolts	6	9.8 ~ 11.8	1.0 ~ 1.2	7.2 ~ 8.7
Knock sensor bolts (LH/RH)	2	15.7 ~ 23.5	1.6 ~ 2.4	11.6 ~ 17.4
Drive plate bolts	8	71.54 ~ 75.46	7.3 ~ 7.7	52.80 ~ 55.69
Upper oil pan bolts	18	9.8 ~ 11.8	1.0 ~ 1.2	7.2 ~ 8.7
Lubrication system
Oil drain bolt	1	34.3 ~ 44.1	3.5 ~ 4.5	25.3 ~ 32.5
Oil pump bolts	3	20.6 ~ 22.6	2.1 ~ 2.3	15.2 ~ 16.6
Oil filter body bolts	4	19.6 ~ 21.6	2.0 ~ 2.2	14.5 ~ 15.9
Oil filter cap	1	34.3	3.5	25.3
Oil level gauge bolt	1	18.6 ~ 22.6	1.9 ~ 2.3	13.7 ~ 16.6
Lower oil pan bolts	13	9.8 ~ 11.8	1.0 ~ 1.2	7.2 ~ 8.7
Oil pump chain cover bolts	2	9.8 ~ 11.8	1.0 ~ 1.2	7.2 ~ 8.7
Oil pump chain tensioner bolt	1	9.8 ~ 11.8	1.0 ~ 1.2	7.2 ~ 8.7
Oil pump chain sprocket bolt	1	18.6 ~ 21.6	1.9 ~ 2.2	13.7 ~ 15.9
Cooling system
Water pump bolts A	3	9.8 ~ 11.8	1.0 ~ 1.2	7.2 ~ 8.7
Water pump bolt B	1	9.8 ~ 11.8	1.0 ~ 1.2	7.2 ~ 8.7
Water pump bolt C	1	21.6 ~ 26.5	2.2 ~ 2.7	15.9 ~ 19.5
Water pump bolt D	1	9.8 ~ 11.8	1.0 ~ 1.2	7.2 ~ 8.7
Water pump bolt E	1	9.8 ~ 11.8	1.0 ~ 1.2	7.2 ~ 8.7
Water pump bolt F	1	9.8 ~ 11.8	1.0 ~ 1.2	7.2 ~ 8.7
Water pump bolts G	4	21.6 ~ 23.5	2.2 ~ 2.4	15.9 ~ 17.4
Water pump pulley bolts	4	7.8 ~ 9.8	0.8 ~ 1.0	5.8 ~ 7.2
Water temp. control nuts	4	18.6 ~ 23.5	1.9 ~ 2.4	13.7 ~ 17.4
Water temp. control bolts	2	18.6 ~ 23.5	1.9 ~ 2.4	13.7 ~ 17.4
Water center pipe bolt	1	9.8 ~ 11.8	1.0 ~ 1.2	7.2 ~ 8.7
Intake and exhaust system
Intake air hose clamp bolt	1	2.9 ~ 4.9	0.3 ~ 0.5	2.2 ~ 3.6
Air cleaner assembly bolts	2	7.8 ~ 9.8	0.8 ~ 1.0	5.8 ~ 7.2
Intake manifold bolts	6	[3.9 ~ 5.9] + [26.5 ~ 31.4]	[0.4 ~ 0.6] + [2.7 ~ 3.2]	[2.9 ~ 4.3] + [19.5 ~ 23.1]
Intake manifold nuts	2	[3.9 ~ 5.9] + [18.62 ~ 23.52]	[0.4 ~ 0.6] + [1.9 ~ 2.4]	[2.9 ~ 4.3] + [13.74 ~ 17.36]
Surge tank bolts	4	9.8 ~ 11.8	1.0 ~ 1.2	7.2 ~ 8.7
Surge tank grommet bolts	2	9.8 ~ 11.8	1.0 ~ 1.2	7.2 ~ 8.7
Surge tank nuts	2	9.8 ~ 11.8	1.0 ~ 1.2	7.2 ~ 8.7
Surge tank stay bolts	2	27.5 ~ 31.3	2.8 ~ 3.2	20.2 ~ 23.1
Exhaust manifold nuts (LH/RH)	16	49.0 ~ 53.9	5.0 ~ 5.5	36.2 ~ 39.8
Exhaust manifold stay bolts	4	24.5 ~ 35.3	2.5 ~ 3.6	18.1 ~ 26.0
Heat protector bolt (LH/RH)	6	9.8 ~ 11.8	1.0 ~ 1.2	7.2 ~ 8.7
Front muffler pipe nuts (LH/RH)	4	39.2 ~ 58.8	4.0 ~ 6.0	28.9 ~ 43.4
Front muffler bolts	2	39.2 ~ 58.8	4.0 ~ 6.0	28.9 ~ 43.4
Front muffler nuts	4	39.2 ~ 58.8	4.0 ~ 6.0	28.9 ~ 43.4
Center muffler and rear muffler mounting nuts	2	39.2 ~ 58.8	4.0 ~ 6.0	28.9 ~ 43.4

Compression Pressure

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

Scheme 1

Scheme 1: Compression Pressure

Scheme 2

Warm up engine until the normal operating temperature(80~95°C(176-203°F)).
Remove the surge tank. (Refer to " «SURGE TANK»(/hyundai/santa-fe/iii-2012-2016/remont/exhaust/#intake-and-exhaust-system) ")
Remove the ignition coil connectors (A) and ignition coils (B). (Refer to " «IGNITION COIL»(/hyundai/santa-fe/iii-2012-2016/remont/ignition-system/#ignition-system) ")
Remove the spark plugs. Using a 16mm plug wrench, remove the 6 spark plugs.
Check cylinder compression pressure. Insert a compression gauge into the spark plug hole. Fully open the throttle. Crank the engine over 7 times to measure compression pressure. NOTE: Always use a fully charged battery to obtain engine speed of 250 RPM or more. Repeat step 1 ) though 3 ) for each cylinder. NOTE: This measurement must be done in as short a time as possible. Compression pressure: 1, 029 kPa (10.5 kgf/cm 2 , 149 psi) (250 ~ 400 RPM) Minimum pressure: 882 kPa (9.0 kgf/cm 2 , 128 psi) Difference between each cylinder: 98 kPa (1.0 kg/cm 2 , 14 psi) or less 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 step 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.
Reinstall the spark plugs.
Install the ignition coils and ignition connectors.
Install the surge tank. (Refer to " «SURGE TANK»(/hyundai/santa-fe/iii-2012-2016/remont/exhaust/#intake-and-exhaust-system) ")

Troubleshooting

Symptom	Suspect area	Remedy
Engine misfire with abnormal internal lower engine noises.	Worn crankshaft bearings. Loose or damaged engine drive plate.	Replace the crankshaft and bearings as required. Repair or replace the drive plate as required.
	Worn piston rings. (Oil consumption may or may not cause the engine to misfire.)	Inspect the cylinder for a loss of compression. Repair or replace as required.
	Worn crankshaft thrust bearings	Replace the crankshaft and bearings as required.
Engine misfire with abnormal valve train noise.	Stuck valves. (Carbon buildup on the valve stem)	Repair or replace as required.
	Excessive worn or mis-aligned timing chain.	Replace the timing chain and sprocket as required.
	Worn camshaft lobes.	Replace the camshaft and valve lifters.
Engine misfire with coolant consumption.	Faulty cylinder head gasket and/or cranking or other damage to the cylinder head and engine block cooling system Coolant consumption may or may not cause the engine to overheat.	Inspect the cylinder head and engine block for damage to the coolant passages and/or a faulty head gasket. Repair or replace as required.
Engine misfire with excessive oil consumption.	Worn valves, guides and/or valve stem oil seals.	Repair or replace as required.
Engine misfire with excessive oil consumption.	Worn piston rings. (Oil consumption may or may not cause the engine to misfire)	Inspect the cylinder for a loss of compression. Repair or replace as required.
Engine noise on start-up, but only lasting a few seconds. NOTE: Minor engine clatter sound immediately upon cold start for very brief period may be normal.	Incorrect oil viscosity.	Drain the oil. Install the correct viscosity oil.
Upper engine noise, regardless of engine speed.	Low oil pressure.	Repair or replace as required.
	Broken valve spring.	Replace the valve spring.
	Worn or dirty valve lifters.	Replace the valve lifters.
	Stretched or broken timing chain and/or damaged sprocket teeth.	Replace the timing chain and sprockets.
	Worn timing chain tensioner, if applicable.	Replace the timing chain tensioner as required.
	Worn camshaft lobes.	Inspect the camshaft lobes. Replace the timing camshaft and valve lifters as required.
	Worn valve guides or valve stems.	Inspect the valves and valve guides, then repair as required.
	Stuck valves. Carbon on the valve stem or valve seat may cause the valve to stay open.	Inspect the valves and valve guides, then repair as required.
	Worn drive belt, idler, tensioner and bearing.	Replace as required.
Lower engine noise, regardless of engine speed.	Low oil pressure.	Repair as required.
	Loose or damaged drive plate.	Repair or replace the drive plate.
	Damaged oil pan, contacting the oil pump screen.	Inspect the oil pan. Inspect the oil pump screen. Repair or replace as required.
	Oil pump screen loose, damaged or restricted.	Inspect the oil pump screen. Repair or replace as required.
	Excessive piston-to-cylinder bore clearance.	Inspect the piston, piston pin and cylinder bore. Repair as required.
	Excessive piston pin-to-piston clearance.	Inspect the piston, piston pin and the connecting rod. Repair or replace as required.
	Excessive connecting rod bearing clearance	Inspect the following components and repair as required. The connecting rod bearings. The connecting rods. The crankshaft pin journals.
	Excessive crankshaft bearing clearance.	Inspect the following components, and repair as required. The crankshaft bearings. The crankshaft main journals. The cylinder block.
	Incorrect piston, piston pin and connecting rod installation	Verify the piston pins and connecting rods are installed correctly. Repair as required.
Engine noise under load.	Low oil pressure	Repair or replace as required.
	Excessive connecting rod bearing clearance.	Inspect the following components and repair as required: The connecting rod bearings. The connecting rods. The crankshaft.
	Excessive crankshaft bearing clearance.	Inspect the following components, and repair as required. The crankshaft bearings. The crankshaft main journals. The cylinder block.
Engine will not crank-crankshaft will not rotate.	Hydraulically locked cylinder. Coolant/antifreeze in cylinder. Oil in cylinder. Fuel in cylinder.	Remove spark plugs and check for fluid. Inspect for broken head gasket. Inspect for cracked engine block or cylinder head. Inspect for a sticking fuel injector and/or leaking fuel regulator.
	Broken timing chain and/or timing chain and/or timing chain gears.	Inspect timing chain and gears. Repair as required.
	Material in cylinder. Broken valve Piston material Foreign material	Inspect cylinder for damaged components and/or foreign materials. Repair or replace as required.
	Seized crankshaft or connecting rod bearings.	Inspect crankshaft and connecting rod bearing. Repair as required.
	Bent or broken connecting rod.	Inspect connecting rods. Repair as required.
	Broken crankshaft.	Inspect crankshaft. Repair as required.

NOTE
Minor engine clatter sound immediately upon cold start for very brief period may be normal.

Special Service Tools

Tool (Number and name) Illustration Use Crankshaft front oil seal installer (09231-3C100) Installation of the front oil seal Ring gear stopper (09231-2B100) Removal and installation of crankshaft pulley bolt. Ring gear stopper (09231-3D100): A (09231-2W100): B Removal and installation of crankshaft pulley bolt. Torque angle adapter (09221-4A000) Installation of bolts & nuts needing an angular method Valve stem seal remover (09222-29000) Removal of the valve stem seal Valve stem seal installer (09222-2W100) Installation of the valve stem seal Valve spring compressor & holder (09222-3K000) (09222-3K100) Removal and installation of the intake or exhaust valves 09222-3K000 09222-3K100 (holder) Crankshaft rear oil seal installer (09231-3C200) (09231-H1100) Installation of the crankshaft rear oil seal 09231-3C200 09231-H1100 Oil pan remover (09215-3C000) Removal of oil pan