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Camshaft cover cap

Discussion in '2.5 N/A' started by blueup, Jul 9, 2019.

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  1. blueup

    blueup New Member

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    Hi All,
    I have a 2.5v6 2005 running just fine until a leak developed on the offside rear camshaft cover cap.They have a dimpled rubber centre that had split and oil started to spray out of it.I took the old one out and replaced it with the correct part and after 20mins of driving the cap came out.I thought I had secured it in place fairly well so I am concerned that they may be a problem I am not aware of.
    Any advice on putting a new one back in ie to use a sealant mastic,or has anyone had this before.
    Regards,
    Blue.
     
  2. steve2286w

    steve2286w Well-Known Member

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    Is there any crankcase pressure blowing it off , if you remove rocker cover filller plug with engine running is it blowing a bit ,, using sealant seems a good idea
    Have a search on the forum it’s probably a common problem / try a post in the defender section also
    Welcome to forum
     
    Last edited: Jul 16, 2019
  3. blueup

    blueup New Member

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    Thank you for the reply.
    I have put a new cap in and it seems to be fine.The advice I had was to put the cap in dry with no RTV.I checked all the breather tubes and all were clear.
    I accessed the cap from the offsidefront wheel arch and pushed it in firmly with the palm of my hand.I then put a couple of dabs of RTV on the cap against the cam case to help it remain in place.
    The first cap I put some engine oil on to help it in.It seems that all it did was to help it out.
    These engines are a labour of love to be sure.
    Cheers.
     
  4. blueup

    blueup New Member

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    Hi All, would you believe that the front camshaft cover cap gave way over the weekend and sprayed oil everywhere.I have ordered a replacement but not sure if it is an age related failure as the car has only done 70,000 or there is excess pressure in the engine.I have had no other symptoms and the breather tubes are all clear.Any thoughts?.
    Cheers.
     
  5. steve2286w

    steve2286w Well-Known Member

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    Is it puffing out of rocker cover with cap removed
     
  6. blueup

    blueup New Member

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    Hi Steve,the story continues.
    I could accept that one camshaft cover cap failing may be down to age as it as the car is getting on a bit but not two.Therefore I was treating the symptoms and not the cause!
    I replaced the front cap and thought there must be pressue building up in the engine somewhere,so time to look at everything.Thought I would blow out the engine breather lines as when I took off the oil fill cap, there seemed to be pressure as previously suggested.All was fine until I noticed the breather lines into the inlet rubber manifold seemed to have resistance.This was an after market part that I bought some months ago as the original was split and leaking.I took the inlet off and looked to see if it was gunged up in the rubber section,only to find that the holes were blanked off and had never been drilled through.Therefore no suction and engine could not breathe.I was very annoyed that I did not check this before fitting but then again why would I.I had assumed it was exactly the same as the part I was replacing.Onced again ASSUME had made an ASS of U and ME!.Holes drilled though and all put back together,all breathing fine and no pressure under the cap anymore.
    Hope this may help someone in what turned out to be an unusual problem.
    Cheers Blue.
     
  7. steve2286w

    steve2286w Well-Known Member

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    That’s a good end to a puzzling problem, you normally expect parts to work properly well done
     
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