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stiff paper (such as a parts tag) loosely over the (12) The paper should be drawn against the hose opening with noticeable force. This will be after (13) If vacuum is not present, disconnect each PCV system hose at top of each breather (Fig. 22). Check (14) If vacuum is still not present, remove each PCV system breather (Fig. 22) from each cylinder (15) If vacuum is still not present, disconnect each PCV system hose at each fitting and check for REMOVAL - 4.7L The PCV valve is located on the oil filler tube (Fig. 23). Two locating tabs are located on the side of the (1) Disconnect PCV line/hose (Fig. 23) by discon- necting rubber hose at PCV valve fitting. (2) Remove PCV valve at oil filler tube by rotating PCV valve downward (counter-clockwise) until locat- (3) After valve is removed, check condition of valve o-ring (Fig. 23). Fig. 21 PCV Valve/Oil Filler Tube—4.7L V-8 Engine 1 - O-RING Fig. 22 PCV Breathers/Tubes/Hoses—4.7L V-8 Engine 1 - FRESH AIR FITTING 25 - 32 EVAPORATIVE EMISSIONS AN PCV VALVE (Continued) |