98 Dakota With 5.2

Discussion in 'Dodge Truck Forum' started by mxer201, Jul 10, 2017.

  1. mxer201

    mxer201 Full Member

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  2. kbrown11

    kbrown11 Full Member

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    #2 kbrown11, Jul 10, 2017
    Last edited: Jul 10, 2017
    If I remember right you can look down into the plenum and see oil pooling there. It should not be a hard job but I have heard it was time consuming. videos of how to do it online. I would bet the plenum gasket is the cause of the oil consumption. Very common problem with that year dodge engine. Check out this link or google hughes engines plenum repair kit:
    Hughes Engines
    Don't reuse the old bolts, use new provided in kit.
     
  3. mxer201

    mxer201 Full Member

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    Thanks, soon as I read your post, I looked and took a photo down the throttle body. Didn't see any oil pools but not dry either. Is this normal or do you think I definitely have a plenum gasket problem? IMG_0470.JPG
     
  4. kbrown11

    kbrown11 Full Member

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    You might have to use a small mirror and look to the back of the plenum to see some pooling but it does look like there is some oil down there from your picture.
     
  5. mxer201

    mxer201 Full Member

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    I ran a flexible tube, with a folded paper towel attached to the end, down the TB throat to the manifold plate. Definitely oil on the towel when I removed it. Think that confirms the plenum gasket is leaking. Or could that be from the PVC system?
     

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  6. dirtrider73068

    dirtrider73068 Senior Moderator
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    If the PCV is not working it will force oil where you wouldn't think it would go, PCV is a crankcase ventilation valve it allows the crankcase to breathe if not it builds up pressure and it has to go somewhere.

    A case in point my PCV valve clogged up as did the PCV vac port and it blew oil out of my valve cover gaskets onto my exhaust manifold.
     
  7. kbrown11

    kbrown11 Full Member

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    If you take off the PCV valve you can hear it make a open/closing noise when moving it. If it makes that noise then it is probably working. Some people just replace it anyway, working or not. They are cheap.
     
  8. Macs

    Macs New Member

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    I'm in the market to buy a truck under $9000. What do you guys think would be the best year. Preferably gas.
     
  9. dirtrider73068

    dirtrider73068 Senior Moderator
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    Please start your own new thread for this question instead of hijacking a thread. It only adds to the confusion.
     
  10. mxer201

    mxer201 Full Member

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    Are the existing plenum cover bolts long enough to reuse with a 0.25 inch thick plate and gasket?
     

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