Suzuki RA410 Manual page 442

1
ENGINE AND EMISSION CONTROL SYSTEM 6E1-77
PCV SYSTEM
NOTE:
Be sure to check that there is no obstruction in PCV valve or
its hoses before checking engine idle speed, for obstructed
PCV valve or hose hampers its accurate inspection.
PCV HOSE
INSPECTION
Check hoses for connection, leakage, clog and deterioration. Re-
place as necessary.
PCV VALVE
INSPECTION
1) Disconnect PCV valve (1) 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 (1).
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.