Dakota Quad Cab 2WD V8-4.7L VIN N (2001)
Fig. 22 PCV Breathers/Tubes/Hoses
11. Disconnect rubber hose from fresh air fitting at left side of air cleaner resonator box. Start engine and bring to idle speed. Hold a piece of stiff
paper (such as a parts tag) loosely over the opening of the disconnected rubber hose.
12. The paper should be drawn against the hose opening with noticeable force. This will be after allowing approximately one minute for crankcase
pressure to reduce.
13. If vacuum is not present, disconnect each PCV system hose at top of each breather. Check for obstructions or restrictions.
14. If vacuum is still not present, remove each PCV system breather from each cylinder head. Check for obstructions or restrictions. If plugged,
replace breather. Tighten breather to 12 Nm (106 in. lbs.) torque. Do not attempt to clean breather
15. If vacuum is still not present, disconnect each PCV system hose at each fitting and check for obstructions or restrictions.
