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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET2007AVEO L4-1.6LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSDESCRIPTION AND OPERATIONCRANKCASE VENTILATION SYSTEM DESCRIPTION
2007 Chevrolet Aveo L4-1.6L
Crankcase Ventilation System Description
2007 Chevrolet Aveo L4-1.6LSECTION Crankcase Ventilation System Description
Crankcase Ventilation System Description
The compressed combustion gas which escapes past the piston rings into the crankcase is known as blow-by gas. Blow-by gas contains large amounts of carbon monoxide (CO) and hydrocarbon (HC). The positive crankcase ventilation (PCV) system prevents the blow-by gas from being emitted into the atmosphere. The PCV system routes the crankcase blow-by gas back into the intake system where the blow-by gas becomes part of the combustion process.
Results Of Incorrect Operation
A plugged oil separator or hose may cause any of the following conditions:
* A rough engine idle
* Engine stalling or low engine idle speed
* High engine crankcase pressure
* Engine oil leaks
* Engine oil in the air cleaner
* Oil sludge in the engine
* Engine oil consumption
* Excessive exhaust emissions
A faulty separator or hose may cause any of the following conditions:
* A rough engine idle
* Engine stalling
* High engine idle speed
* Incorrect engine crankcase pressure
* Excessive exhaust emissions
* Engine oil consumption
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.