PCV SYSTEM
NOTE:
Be sure to check that there is no obstruction in PCV valve or
its hoses before checking engine idle speed/IAC duty, for ob-
structed PCV valve or hose hampers its accurate checking.
PCV HOSE INSPECTION
Check hoses for connection, leakage, clog and deterioration. Re-
place as necessary.
PCV VALVE INSPECTION
1) Disconnect PCV valve from cylinder head cover and install plug
to head cover hole.
2) Run engine at idle speed.
3) Place your finger over end of PCV valve to check for vacuum.
If there is no vacuum, check for clogged valve. Replace as nec-
essary.
4) 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 rattle, replace it.
5) After checking, remove plug and install PCV valve.
6E1-78
ENGIINE AND EMISSION CONTROL SYSTEM
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Страница 644: ...Prepared by Overseas Service Department 1st Ed October 1999 Printing 646 ...