FX50 AWD V8-5.0L (VK50VE) (2009)
Valve Clearance: Testing and Inspection
CAMSHAFT VALVE CLEARANCE
Inspection
INSPECTION
Check valve clearance if applicable to the following cases:
Intake side:
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At the removal and installation of VVEL ladder assembly or valve-related parts, or at the occurrence of malfunction (poor starting, idle
malfunction, unusual noise) due to aged deterioration in valve clearance.
CAUTION:
Valve clearance check on the intake side is not required after replacing the VVEL ladder assembly & cylinder head assembly with a new one.
(Install new VVEL ladder assembly and cylinder head assembly in factory-shipped condition because it is factory-adjusted and inspected.)
NOTE:
VVEL ladder assembly cannot be replaced as a single part, because it is machined together with cylinder head assembly.
Exhaust side:
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At the removal, installation, and replacement of camshaft (EXH) or valve-related parts, or at the occurrence of malfunction (poor starting, idle
malfunction, unusual noise) due to aged deterioration in valve clearance.
1. Remove rocker covers (bank 1 and bank 2). Refer to See: Powertrain Management/Ignition System/Ignition Coil/Service and Repair/Removal and
Installation.
2. Measure the valve clearance as per the following:
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Use the feeler gauge (commercial service tool) of curved-tip. This allows the feeler gauge to access the clearance between camshaft (drive shaft)
nose and valve lifter with ease.
Valve clearance : Refer to "Camshaft". See: Camshaft, Lifters and Push Rods/Camshaft/Specifications
NOTE:
Be sure to note the following points when measuring valve clearance on the intake side.
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Before measuring, check that the position of drive shaft nose is within the angle shown in the figure.
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Refer to the figure for the insertion direction of the feeler gauge since the direction depends on the bank.