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Thread: Timing cover coolant leak

  1. #1
    sparky34 Guest

    Timing cover coolant leak

    I have a v8 96 disco that has started leaking coolant from the timing cover, right hand side just below the dizzy were it bolts to the block, doesn't seem to leak when the engines hot but when left over night coolant leaks down were the timing cover housing bolts onto the block and drips off the bottom of the sump, about 10 drops over night. I suppose i need to replace the timing cover to block gasket. No easy fix ,any one had the same problem.??

  2. #2
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    Try tightening the bolts just a little bit at a time. The big bolts go right through to the block so can be relatively tight.
    Usually the water is coming out of the water pump gasket, or the gasket between the timing case and the motor. It runs from inside the wet areas across to the bolt and down the bolt.

    Regards Philip A

  3. #3
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    Whereas I would normally agree with PhillipA on Rover V8 engine subjects, I would say DO NOT tighten the bolts on a (MA) 1994 onwards serpentine belt V8 engine as the gasket material used from the factory is VERY brittle, which causes the problem in the first place. Tightening will make it worse.

    Be prepared to remove the cover and replace the gasket. It is easy in a serpentine belt engine, compared to the earlier versions with the 4 V belts. Unscrew and remove the studs from the base of the cover where they go through the sump as it will be easier or a sump removal is on the cards.

    JC

  4. #4
    sparky34 Guest
    Quote Originally Posted by justinc View Post
    Whereas I would normally agree with PhillipA on Rover V8 engine subjects, I would say DO NOT tighten the bolts on a (MA) 1994 onwards serpentine belt V8 engine as the gasket material used from the factory is VERY brittle, which causes the problem in the first place. Tightening will make it worse.

    Be prepared to remove the cover and replace the gasket. It is easy in a serpentine belt engine, compared to the earlier versions with the 4 V belts. Unscrew and remove the studs from the base of the cover where they go through the sump as it will be easier or a sump removal is on the cards.

    JC
    JC, are you saying this repair can be carried out without removing the sump.
    Would tightening the bolts as Phillip suggested only exacerbate the leak, also what long term issues would arise if this problem wasn't fixed promptly.

    Sparky

  5. #5
    It'sNotWorthComplaining! Guest
    Quote Originally Posted by sparky34 View Post
    JC, are you saying this repair can be carried out without removing the sump.
    Would tightening the bolts as Phillip suggested only exacerbate the leak, also what long term issues would arise if this problem wasn't fixed promptly.

    Sparky
    If you remove one of the sump to timing cover nuts and screw it onto another stud and nip the nuts tight against each other then unscrew the stud out from the timing cover ,do this for the others,. Then you will be able to slide the cover towards you to remove. When you refit put a dob of RTV onto the exposed sump face.
    You will have to remove the harmonic balancer so suggest you get a new crankshaft seal for timing cover

  6. #6
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    Quote Originally Posted by It'sNotWorthComplaining! View Post
    If you remove one of the sump to timing cover nuts and screw it onto another stud and nip the nuts tight against each other then unscrew the stud out from the timing cover ,do this for the others,. Then you will be able to slide the cover towards you to remove. When you refit put a dob of RTV onto the exposed sump face.
    You will have to remove the harmonic balancer so suggest you get a new crankshaft seal for timing cover
    Exactly, as above

    JC

  7. #7
    sparky34 Guest
    Thanks for the advice fellas, spoke to my mechanic today,he is obviously a mechanic and i am an electrician so a little contra deal about to happen.
    He suggested i buy a new water pump and gasket, get the disco up on the hoist pull her down and see what else might be required, said there was a chance that the timing cover could require replacement due to electrolysis,
    IE the metal is corroded or eaten away.
    He suggested i ask you guys where to buy a quality after market water pump as there is a lot of rubbish out there that's not worth buying.
    So where to buy a quality after market water pump,gasket and possibly complete timing cover. Have previously bought my spares from:
    JAG SPARES & BRITISH4WD in Tasmania, i am in Sydney.

    Sparky

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