PCV SYSTEM
Article Text (p. 2)
1983 Mazda RX7
For www.iluvmyrx7.com
Copyright © 1998 Mitchell Repair Information Company, LLC
Sunday, August 26, 2001 04:59PM
Fig. 1: B2000 Pickup Crankcase Ventilation System
TESTING
PISTON ENGINES
All Exc. GLC FWD
With engine idling at normal operating temperature,
disconnect PCV valve hose at valve cover. Close off hose opening with
finger and check that idle speed drops. If idle speed does not drop,
replace valve.
GLC FWD
Remove PCV valve from valve cover. Blow through valve with
mouth pressure from valve cover side of valve. Air should pass
through. Blow through valve from opposite end. Air should not pass
through. If valve does not operate as described, replace valve.
ROTARY ENGINES
1) Disconnect purge valve-to-oil filler tube hose from purge
valve. Start engine and operate at idle speed. Place finger over port
"C" and check that air is not being drawn into port. See Fig. 2.
2) Increase engine speed to 2000 RPM and check port "C". Air
should be drawn into port. If valve does not operate as outlined,
replace purge valve.
MAINTENANCE
Clean valve and check PCV system operation every 30,000
miles.
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