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Jeep Cherokee water in oil cap

5 messages,  Last post on May 21, 2010 at 7:26 AM

You are in the Jeep Cherokee and Jeep Grand Cherokee Forum.

What is this discussion about? Jeep Grand Cherokee, Dodge Durango, Engine, SUV

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#1 of 5 water in oil cap by mandm4

Feb 25, 2010 (1:18 pm)

2000 JGC I have milky oil in the area of my oil cap,engine is 4.7. I check the oil level, oil is good and not milky, check the antifreeze level full none lost. I replace the o-ring on the cap and then replaced the cap too. still getting water in. It is only in the cap area not sure how but would like to know how to solve this. Could it be getting through the PVC ? Anyone know please
 
Thank you

#2 of 5 Re: water in oil cap [mandm4] by tuggajb

Feb 25, 2010 (1:42 pm)

Replying to: mandm4 (Feb 25, 2010 1:18 pm)
change your pvc valve
 
also hose to intake

#3 of 5 Re: water in oil cap [tuggajb] by mandm4

Feb 25, 2010 (7:15 pm)

Replying to: tuggajb (Feb 25, 2010 1:42 pm)
Thanks I will try that

#4 of 5 Re: water in oil cap [mandm4] by mandm4

Mar 02, 2010 (7:33 pm)

Replying to: mandm4 (Feb 25, 2010 7:15 pm)
I tried replaceing the PVC and the hose from the intake to the PVC, well I am still getting water in the oil cap area only, still not loosing antifreeze and engine oil is still good. Please anyone have any ideas. Right now not causing any problems but dont want it to get worse. Thanks

#5 of 5 Re: water in oil cap [mandm4] by thunderchild

May 21, 2010 (7:26 am)

Replying to: mandm4 (Mar 02, 2010 7:33 pm)
mandm4:
 
What you are seeing is a well known problem with the 4.7 engines. You are seeing condensation from the oil in the tube. It was a design flaw and they have a fix for it. I saw it on the RAM forums. What they basically do at the dealer is put in a re-routing kit for the PVC. It clears the problem. I am going to have them do my 2k3 Durango just for peace of mind. I must also say that this problem does diminish with the use of a good synthetic oil. At this time i am at 165,780 miles on mine so I am using 5 quarts of Castrol GTX with one quart of Castrol Syntec. Ihave not had the issue much at all. You also will most likely see this when the weather get's cold.

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