|
Everyone, just found out there is a TSB on this issue. Here it is (I am experiencing quart loss every 500 miles):
*
Some customers may comment on any of the following conditions:
****•*Excessive oil consumption.
****•*
Blue exhaust smoke.
****•*
The malfunction indicator lamp (MIL) is illuminated.
The technician may observe DTC P0300 set as current or in history.
This condition may be caused by one or more of the following:
****•*
A PCV tube that is pinched or restricted by casting flash.
****•*
The PCV baffle drain holes may be plugged.
****•*
A malfunctioning PCV orifice.
****•*
The PCV system pulling an excessive amount of oil through the left valve rocker arm cover.
****•*
Overactive valve lifters spraying an excessive amount of oil onto the underside of the left valve rocker arm cover.
Recommendation/Instructions
*
Perform a complete visual inspection of the engine. Refer to Oil Consumption Diagnosis in SI.
Remove the left side valve rocker arm cover. Refer to Valve Rocker Arm Cover Replacement - Left Side in SI.
Important:*If the valve lifters ARE overactive, this step will result in oil being sprayed in the engine area.
Start and idle the engine.
⇒
If idling the engine DOES RESULT in an excessive amount of oil being sprayed from ANY valve lifter, replace ALL 8 valve lifters AND then PROCEED to Step 4. Refer to Valve Lifter Replacement (With AFM) in SI.
⇒
If idling the engine DOES NOT result in an excessive amount of oil being sprayed from ANY valve lifter, then PROCEED to Step 4.
Inspect the crankcase ventilation system. Refer to Crankcase Ventilation System Inspection/Diagnosis and Crankcase Ventilation System Description in SI.
Inspect the PCV tube for oil dripping out of it. Refer to Positive Crankcase Ventilation Hose/Pipe/Tube Replacement in SI.
Look through the throttle body opening for oil collecting in the bottom of the intake manifold.
⇒
If oil is observed leaking from the PCV tube or accumulating in the intake manifold, then REPLACE the left bank valve rocker arm cover AND the PCV tube with the revised parts listed in the Parts Information section below. Refer to Valve Rocker Arm Cover Replacement - Left Side and Positive Crankcase Ventilation Hose/Pipe/Tube Replacement in SI.
*
*
|