I tried to look around but found conflicting results... I bought a TJ and am finding a bunch of things missing. This is the latest and it seems to be discontinued. How can I create a new part? I need this part - Mopar 4854072 Tube-Vent. Can I just use regular tubing and make it work? If so, what tubing? Thanks all!!
Vacuum hose replacement
- Thread starter boganst
- Start date
That threaded tube is a specially sized tube basically meant to be a metered orifice for the crankcase ventilatin system. If it is too large it will cause your idle to redline due to essentially causing a vacuum leak at the intake manifold. Probably better off buying a used valve cover off ebay that happens to have the tube still on it.
Note: everything I just said is 2.5L specific. The 4.0 has a similar condition but it's metered orifice is built into the second plastic elbow, at the rear of the valve cover. The 2.5L has the metered orifice as the threaded tube at the front of the VC, and a free flowing CCV elbow towards the center or rear of the VC. The 4.0 has 2 plastic CCV elbows, one of them metered, which is at the back. Helps to provide these details so that people don't read the conditions for one motor and apply to the other, since they are basically equal but opposite in how they work.
Note: everything I just said is 2.5L specific. The 4.0 has a similar condition but it's metered orifice is built into the second plastic elbow, at the rear of the valve cover. The 2.5L has the metered orifice as the threaded tube at the front of the VC, and a free flowing CCV elbow towards the center or rear of the VC. The 4.0 has 2 plastic CCV elbows, one of them metered, which is at the back. Helps to provide these details so that people don't read the conditions for one motor and apply to the other, since they are basically equal but opposite in how they work.
I used a repair section of Brake line from NAPA that was approximately the same size and easy to bend by hand.
Ended up buying 1/4 diameter vacuum hose from the parts store. Had to heat one end to expand it a bit to get it to go over the manifold nipple but it didn't take too much. Fit perfectly on the valve cover nipple. See how it works and keep an eye out for the actual part on ebay... Those parts are hard to find so I am not getting my hopes up. Thanks all who offered suggestions.
One follow up, anybody know why the PO might have put a bolt into the hose that was still on the manifold to plug it up? Trail repair or something else? Thanks!
One follow up, anybody know why the PO might have put a bolt into the hose that was still on the manifold to plug it up? Trail repair or something else? Thanks!
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