Suzuki 2000 Grand Vitara SQ625 Service Manual page 635

1
ENGINE AND EMISSION CONTROL SYSTEM (H25 ENGINE) 6E2-47
PCV VALVE
1) Disconnect PCV valve (1) from cylinder head cover and plug
head cover hole.
2) Run engine at idle.
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 valve.
5) After checking, connect PCV valve, PCV hose and clamp se-
curely.