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6E1-42 ENGINE AND EMISSION CONTROL SYSTEM
PCV system inspection
NOTE:
Be sure to check that there is no obstruction in PCV
valve or its hoses before checking IAC duty, for
obstructed PCV valve or hose hampers its accurate
adjustment.
PCV HOSE
Check hoses for connection, leakage, clog and deterioration.
Replace as necessary.
PCV VALVE
1) Detach air cleaner assembly.
2) Disconnect PCV valve from cylinder head cover and install
plug to head cover hole.
3) Install air cleaner assembly temporarily.
4) Run engine at idle.
5) Place your finger over end of PCV valve (1) to check for vac-
uum.
If there is no vacuum, check for clogged valve. Replace as
necessary.
6) After checking vacuum, stop engine and remove PCV valve.
Shake valve and listen for the rattle of check needle inside
the valve. If valve does not the rattle, replace valve.
7) After checking, remove plug and install PCV valve.
8) Install air cleaner assembly securely.
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