Oil from dip stick

Machine15825 · 11-09-2009, 09:10 AM

I have a question. I fairly fluid with engine troubleshooting but this has me a bit stumped. I keep getting oil out of my dip stick tube. My pcv valve chatters as it should when I shake it, but I have oil all over my plug wires and distributor. It isn't coming from my valve cover and the engine does not leak. Thanks in advance.

**idaholtby** · 11-09-2009, 09:16 AM

Quote:

Originally Posted by Machine15825

I have a question. I fairly fluid with engine troubleshooting but this has me a bit stumped. I keep getting oil out of my dip stick tube. My pcv valve chatters as it should when I shake it, but I have oil all over my plug wires and distributor. It isn't coming from my valve cover and the engine does not leak. Thanks in advance.

Your '94 does not have a PCV valve. You have a CCV system, so that elbow that looks like a pcv valve is nothing more than an elbow with an orifice. If it rattles, then it is partially clogged. I would highly recommend cleaning it out, and also to remove the valve cover and clean out the baffle tower below it. I bet it is plugged solid allow pressure to build in your crankcase which is pushing oil out your dipstick.

**5.7YJ** · 11-09-2009, 09:17 AM

2.5L engines tend to have a lot of blow by.

Machine15825 · 11-09-2009, 10:25 AM

Alright good deal. I read somewhere that there is a pcv type device on the bottom of the intake manifold. Is this true?? I haven't got to searching yet.

**idaholtby** · 11-09-2009, 10:39 AM

Quote:

Originally Posted by Machine15825

Alright good deal. I read somewhere that there is a pcv type device on the bottom of the intake manifold. Is this true?? I haven't got to searching yet.

I don't know what you are referring to. But I will bet that if you clean as described above, you problems will be solved. You will be amazed at how much carbon is trapped in the baffle plate and splash tower on the inside of the valve cover. Remove the valve cover, remove the splash tower inside the valve cover directly below the CCV elbow, and clean it all up. The baffle is between the tower and valve cover. There are three small bolts that mount the tower to the inside of the valve cover. There is also a gasket for the baffle plate (dealer item only), but I made due with a thin film of high temp RTV when I did mine. Also don't forget to clean out the elbow, the rattle you are hearing is likely a loose carbon deposit moving around.

Machine15825 · 11-09-2009, 10:47 AM

alright well I got the cvv cleaned out no more chatter and can blow through it both ways... I'm going to pull that valve cover and check it out... Thanks.. I'll keep you posted.

**idaholtby** · 11-09-2009, 11:26 AM

Quote:

Originally Posted by Machine15825

alright well I got the cvv cleaned out no more chatter and can blow through it both ways... I'm going to pull that valve cover and check it out... Thanks.. I'll keep you posted.

I forgot to mention that it is advised to use locktite on the bolts that mount the splash tower. It would not be good to have these work loose at a later date. Also check the vacuum line off of the CCV elbow for build up as well. If carbon go up into the elbow, it may have migrated further down this tubing as well. Good luck and happy scrubbing!

Machine15825 · 11-09-2009, 11:49 AM

Alright I'll be sure to do that. Thanks a lot.

Machine15825 · 11-09-2009, 02:57 PM

I have taken the valve cover off. everything was SUPER clean. Barely any sludge on it at all. I pulled every vacuum line to elimate the chance of something being plugged. I don't know what to do... More ideas needed as soon as possible

Machine15825 · 11-09-2009, 05:54 PM

Help guys please. lol I just put new spark plug wires on and I have oil all over them now... GRRR

**idaholtby** · 11-09-2009, 06:51 PM

Quote:

Originally Posted by Machine15825

Help guys please. lol I just put new spark plug wires on and I have oil all over them now... GRRR

I must say I am suprised that the inside of the valve cover was clean. Is oil still pushing out of the dip stick? How is it that your new plug wires are getting oil soaked?

Machine15825 · 11-09-2009, 06:54 PM

Very very little carbon build up and had clean oil sitting in the head. The PO was a stickler on oil changes. Wish he was that picky about the body....

Well the plug wires are right beside the oil dip stick... So I suppose that's how LOL Weird really coming out of the top of the dip stick.... The bottom is sealed in the engine so it makes sense. I have oil on my heater core hoses even, but it runs great...

**idaholtby** · 11-09-2009, 07:02 PM

Quote:

Originally Posted by Machine15825

Very very little carbon build up and had clean oil sitting in the head. The PO was a stickler on oil changes. Wish he was that picky about the body....

Well the plug wires are right beside the oil dip stick... So I suppose that's how LOL Weird really coming out of the top of the dip stick.... The bottom is sealed in the engine so it makes sense. I have oil on my heater core hoses even, but it runs great...

If you are sure that the source of the leak is from the oil dipstick and the CCV system is now clean, then the only other source for the blow bye would be explained by worn piston rings. On that side of the moter, there are several sources for oil leaks. Most prevalent would be the oil sender for the gauge. Another would be the oil filter or the oil filter adapter housing. Others could be the distributer shaft or leaks from above. If it is as severe as to soak the newly installed plug wires, then I would suspect the oil sending unit for the oil pressure gauge is at fault (this is a very common failure that sprays oil everywhere).

Jeepsr4me19 · 11-10-2009, 06:37 AM

You can get a locking dip stick. They sell them and you can make one using a auto trans dip stick from Chevy truck. They have a rubber seal around the top of them and a lock tab. Once turned the rubber seal expands and seals the thing tight. I like using those cause we get a few creek crossings around here that are 3-4 foot deep and water likes to find a way in.

But for your problem if the crank case vent is free then there should be no pressure to push oil out of the dipstick hole unless maybe its over filled a lot.

Jeepsr4me19 · 11-10-2009, 06:39 AM

Or just for test purposes go to the boat section in Walmart and get a boat plug. Remove the dipstick from jeep and poke that in there and seal it tight. Then clean all the engine good and then do test run. Then you will see where the oil is coming from. But the oil sender is known for leaking and the filter if the seal got rolled going on.