CHEVROLET CAMARO 1982 Repair Guide
CAMARO 1982
CHEVROLET
CHEVROLET
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CHEVROLET CAMARO 1982 Repair Guide
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ENGINE CONTROLS
EMISSION CONTROLS
CRANKCASE VENTILATION SYSTEM
OPERATION
The Positive Crankcase Ventilation (PCV ) system is used to control crankcase
blow-by vapors. As the engine is running, clean, filtered air is drawn through the
air filter and into the crankcase. As the air passes through the crankca\
se, it
picks up the combustion gases and carries them out of the crankcase, through
the PCV valve, and into the induction system . As they enter the intake manifold,
they are drawn into the combustion chamber where they are reburned.
The most critical component in the system is the PCV valve. This valve controls
the amount of gases which are recycled into the combustion chamber. At low
engine speeds, the valve is partially clos ed, limiting the flow of gases into the
intake manifold. As engine speed incr eases, the valve opens to admit greater
quantities of gases into the intake manifold. If the PCV valve becomes clogged,
the system is designed to allow excessive amounts of blow-by gases to back
flow through the crankcase tube into the air cleaner to be consumed by normal
combustion.
Fig. 1: PCV flow on 4, 6 and 8cylinder engines
SERVICE
Inspect the PCV system hose and connecti ons at each tune-up and replace any
deteriorated hoses. Check the PCV valve at every tune-up and replace it at
30,000 mile intervals.
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TESTING
1. Remove the PCV valve from the intake manifold or valve cover.
2. Run the engine at idle.
3. Place your thumb over the end of the valve. Check for vacuum. If there is
no vacuum at the valve, check fo r plugged valve or vacuum lines.
Fig. 2: Check the PCV valve for vacuum at idle
4. Shut off the engine. Shake the valv e and listen for the rattle. If valve
doesn't rattle, replace it.
REMOVAL & INSTALLATION
PCV SYSTEM FILTER
1. To replace the PCV filter discon nect the hose, if equipped, attached to
the filter at the air cl eaner and remove the air cleaner cover. Slide the
spring clamp off of the filter and re move it from the air cleaner.
2. Inspect the rubber grommet in the valve cover and the hose for signs of \
deterioration, brittleness and cracking. Replace as necessary.
3. Installation is the reverse of removal.
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PCV VALVE
1. Disconnect the hose or pi pe from the PCV valve.
2. Gently pull the PCV valv e out of the grommet in the valve cover or intake
manifold.
3. Installation is the reverse of removal.
Fig. 3: PCV system on Tuned Port Injection equipped engines
Fig. 4: PCV filter location on most carbureted and throttle body injected engines
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Fig. 5: Most PCV valves are lo cated in the rocker arm covers
Fig. 6: Once the valve has been withdraw n from the rocker cover, it can be
removed from the hose and replaced
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