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 MANUALSLEXUS2010LX 570 V8-5.7L (3UR-FE)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTEMISSION CONTROL SYSTEMSPOSITIVE CRANKCASE VENTILATIONPOSITIVE CRANKCASE VENTILATION VALVETESTING AND INSPECTION
2010 Lexus LX 570 V8-5.7L (3UR-FE)
Positive Crankcase Ventilation Valve: Testing and Inspection
2010 Lexus LX 570 V8-5.7L (3UR-FE)SECTION Testing and Inspection
3UR-FE EMISSION CONTROL: PCV VALVE: INSPECTION
1. INSPECT PCV VALVE SUB-ASSEMBLY
(a) Install a clean hose to the PCV valve.
(b) Check the PCV valve operation.
(1) Blow air into the cylinder head side, and check that air passes through easily.
CAUTION:
Do not suck air through the valve.
Petroleum substances inside the valve are hazardous to your health.
(2) Blow air into the intake manifold side, and check that air passes through with difficulty.
If the result is not as specified, replace the PCV valve sub-assembly.
(c) Remove the hose from the PCV valve.
RENDER: 1.0x
NO RELATED
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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.