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Thread: engine ticking noise - need help!

  1. 13th July 2010, 10:12 AM #1
    Discovery-94 Guest

    engine ticking noise - need help!

    Hi all...

    Having a few dramas with my 300TDI:
    Last week a strange noise started developing, seeming to come from the engine/cyl head area.

    Its a ticking noise/ "PFTPFFFTPFFFT" noise, which gets worse when engine is warm... and increases/decreases with acceleration.

    Whats everyones thoughts?
    exhaust leaks - would it get worse when warm?
    loose tappes? - set them about a year ago on brand new head...

    I am really tight on time (and its been raining over here for days now... :P) so would like to check as many things as possible while I'm at it to get down to the problem.

    Had a quick look a few days ago and noticed a MASSIVE leak around the oil pressure switch, to the point where oil level was actually at low (I had checked it probably 10 days earlier and it was ok...). Got a new switch to put in tonight... and filled up the oil, but the noise is still there......

    So..... what shall I do next?

    Cheers in advance,

    Simone
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  2. 13th July 2010, 10:17 AM #2
    Scouse's Avatar
    Scouse
    Scouse is offline OldBushie Gold Subscriber
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    I'd say exhaust over anything else. Any signs of soot around the manifold gaskets?
    Scott
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  3. 13th July 2010, 11:42 AM #3
    Discovery-94 Guest
    nope, nothing around the manifolds... got new gaskets in there as well.
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  4. 13th July 2010, 07:26 PM #4
    discomuzz's Avatar
    discomuzz
    discomuzz is offline Master
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    Lift pump?

    Head gasket?

    Injector leak?
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  5. 14th July 2010, 12:19 AM #5
    setsuna Guest
    I actually have the same 'problem'.
    seems to quiet down after a service too.
    quieter in winter also

    yet to investigate further due to time restraints!

    David.
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  6. 28th July 2010, 03:59 PM #6
    Discovery-94 Guest
    well here's news - and more questions...

    Had some time to investigate the noise a little

    - There's definitely no leaks around the exhaust manifolds (-unfortunately)

    - Took the Rocker cover off, checked and adjusted valve clearances (- some of them were actually a bit too tight, rather than loose)
    No valve stem caps missing and no sticking pushrods.

    - Investigated the vacuum pump but apart from a minor oil leak around the seal and the brake pedal sounding like pumping up an air mattress I can't see or hear anything wrong with it...


    It is definitely coming from the back of the engine... and its driving me crazy - did the tight valve clearances damage the pushrods/camshaft/or else or could it be the head gasket after all?

    Just trying to get a few more ideas... Any help is appreciated!
    Thanks
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  7. 28th July 2010, 04:54 PM #7
    Blknight.aus's Avatar
    Blknight.aus
    Blknight.aus is offline RoverLord Vendor
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    reducing tappet clearances means you have valve recession going on, thats not a good thing.

    check the air intake hosing and the wastegate actuator line.

    did you check the fittings of the flange and dump pipe from the turbo?
    Dave

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  8. 28th July 2010, 11:16 PM #8
    discomuzz's Avatar
    discomuzz
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    It's a head gasket!

    Same as mine.

    The gasket has blown between No4. and the rear of the head.

    On the bright side!

    Mine is still used as a daily driver.

    Just sounds like crap.
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  9. 29th July 2010, 02:36 PM #9
    justinc's Avatar
    justinc
    justinc is offline Swaggie Vendor
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    Head gasket. Common to blow out the back of the head at number4.

    JC
    The Isuzu 110. Solid and as dependable as a rock, coming soon with auto box😊
    The Range Rover L322 4.4.TTDV8 ....probably won't bother with the remap..😈
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  10. 29th July 2010, 06:11 PM #10
    Discovery-94 Guest
    Well, thanks heaps everybody for your input!...
    though....

    valve recession, burnt valve guides, blown head gasket, disco sounding like crap

    not exactly the things I like to hear.....

    replaced the head (brand new), gasket and bolts only a year ago... how can it already ****ing blow??

    Well... seems like everything is pointing towards it

    How can I confirm this finding (myself in the back shed)
    - there is no milky residue on the oil cap (but it does chuff out a bit of air)
    - cant make out oil in coolant
    - no lack of power (I mean... it is already a 300TDI

    And moreover will it have serious consequences if I put up with the noise for a few weeks before changing the gasket (if it turns out to be) - meaning what else can I **** driving it on a daily basis in this....condition...??

    Thanks again!
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