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96 Dakota 5.2 won't run right

Discussion in 'Dakota' started by 96Dodge4x4, Feb 13, 2017.

  1. 96Dodge4x4

    96Dodge4x4 New Member

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    Got a chance to look down there and it does have some oil. Are they supposed to be completely dry in there? I got a few pictures of it. There is a little pool in the back
     
  2. 96Dodge4x4

    96Dodge4x4 New Member

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  3. Bob Lincoln

    Bob Lincoln "CHECK FAULT CODES" Level 2 Supporter

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    There's a lot of residue there from gasoline vapors.
    I would use a throttle body cleaner spray first. Slowly spray small amounts and let that gunk melt away before you spray more. Too much at once and it will stall. Then rev it above 1000 RPM to clear it.
    Then do a full tuneup. I see that you are using Autolite plugs. I have always found them to be deficient in Chrysler products. They often cause rough idle and flashover. Use Champions when you tune it up and you will notice the difference.
     
  4. valiant67

    valiant67 Rich Corinthian Leather Level III Supporter

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    I've seen them a lot oilier than that.
     
  5. 96Dodge4x4

    96Dodge4x4 New Member

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    So are you guys saying probably not a plenum leak? Is a little bit of oil in there normal. I will go ahead and clean it out later today with throttle body cleaner and will do the tune up soon.
     
  6. Bob Lincoln

    Bob Lincoln "CHECK FAULT CODES" Level 2 Supporter

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    Virtually all of that is gasoline residue, not oil. I would not worry about a leak. But it could use a good spray of throttle cleaner, and that's best done just before the plugs are changed, so that you don't foul new plugs with the crap that gets loosened and blown through.
     
  7. valiant67

    valiant67 Rich Corinthian Leather Level III Supporter

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    You may still have a leak there - or there could be a vacuum leak somewhere else. Your symptoms really sound like a vacuum leak to me.
     
  8. 96Dodge4x4

    96Dodge4x4 New Member

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    Do you think maybe when the engine warms up the gasket starts leaking? Do you know of other places where a vacuum leak would of occur? Is there another way to check the plenum or an easy way to check a vacuum leak? I read something about putting a piece of paper over the oil fill hole and seeing which way it moves
     
  9. valiant67

    valiant67 Rich Corinthian Leather Level III Supporter

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    When the engine is cold, the mixture is richer. This can hide a vacuum leak until the mixture leans out as it warms up.

    There is another way to check for the plenum leak. Let me see if I can find it.
     
  10. valiant67

    valiant67 Rich Corinthian Leather Level III Supporter

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    Look at the second post in this thread on my oil use:
    1999 Dodge Dakota oil useage
    ImperialCrown does a good job of describing the test.
     
  11. valiant67

    valiant67 Rich Corinthian Leather Level III Supporter

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  12. 96Dodge4x4

    96Dodge4x4 New Member

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    Thanks I will try it out after getting the throttle body back on since I cleaned that out. A quick question with that is when I took it off there was no gasket, should I put one on? because I know the auto parts store has one.
     
  13. 96Dodge4x4

    96Dodge4x4 New Member

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    Went ahead and put a gasket on the TB and cleaned that and what I could get in the intake. The truck ran much better as in rough idle and stayed that way until it started "bouncing" again after running for 45mins-1hr. Tried the pcv and it felt kinda like it was sucking in but it wasn't very strong at all if it was. How strong of a pull would it be if the gasket was blown? Plan on changing the plugs tomorrow to chanpions