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Author Subject: cams
dazzy6

Newbie

Location: betws y coed

Registered: 18 Jan 2013

Posts: 28

Status: Offline
Post #1
do the cams on these rallye engines wear ? got a funny rattle noise coming from the exhaust cam the car has done 145,000 miles and had a top end rebuild at 110,000 . its only just started making this noise, read so many posts on here about bent valves and tapping its enough to get anyone worried lol, ive had the car for about 2 months now and its only just started making the tappy rattle noise since about a week . if it would of had a bad rebuild at 110,000 im guesing it would of tapped from then on ?

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darrenevans

bianca white rallye t706wox
Posted 4th Mar 2013 at 20:17
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robthe6

Senior User

Location: northamptonshire

Registered: 06 Jun 2008

Posts: 667

Status: Offline
Post #2
its probs a tappet. they can gunk up and jam up a bit a good run an they will quiet down but easily become noise again. best bet removing the cams and cleaning the tappets.

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Posted 4th Mar 2013 at 20:20
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dazzy6

Newbie

Location: betws y coed

Registered: 18 Jan 2013

Posts: 28

Status: Offline
Post #3
robthe6 wrote:
its probs a tappet. they can gunk up and jam up a bit a good run an they will quiet down but easily become noise again. best bet removing the cams and cleaning the tappets.


thats great cheers mate i will try that ! so just take them all out and see which ones are gunked up then squeeze the oil out clean them then pop them back in ?

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darrenevans

bianca white rallye t706wox
Posted 4th Mar 2013 at 20:29
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swiftyboi006

Seasoned Pro

Location: Maidenhead

Registered: 12 Apr 2010

Posts: 2,110

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Post #4
Have you checked the heat shield?

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Posted 4th Mar 2013 at 20:29
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dangti6

aka JKshooter

Location: Taunton, Somerset

Registered: 15 Jun 2006

Posts: 10,305

Status: Offline
Post #5
Get a video uploaded

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  • Senior Test Automation Engineer for the 306GTi6 Owners Club Forum Wizard

    • Posted 4th Mar 2013 at 20:32
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    dazzy6

    Newbie

    Location: betws y coed

    Registered: 18 Jan 2013

    Posts: 28

    Status: Offline
    Post #6
    swiftyboi006 wrote:
    Have you checked the heat shield?


    it felt tight when i checked it wish it was that simple ha , all spark plugs are brand new and tight , sometimes it sounds like a rattle then other times a tap . cant hear nothin when engine is cold sounds worse when hot , changed oil from 5w 40 to total 7000 10w 40 didnt make any difference was just tryin to eliminate the obvious

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    darrenevans

    bianca white rallye t706wox
    Posted 4th Mar 2013 at 20:37
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    dazzy6

    Newbie

    Location: betws y coed

    Registered: 18 Jan 2013

    Posts: 28

    Status: Offline
    Post #7
    dangti6 wrote:
    Get a video uploaded


    havnt got a clue how to do that cant even get a pic uploaded haha

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    darrenevans

    bianca white rallye t706wox
    Posted 4th Mar 2013 at 20:39
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    darzmat

    Senior User

    Location: nairn

    Registered: 14 Jan 2011

    Posts: 879

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    Post #8
    use a screw driver against your ear and try pin point the sound.

    put it on top of the eaxhaust cam cover, and then on the vacuum pump which runs off the near side of the exhaust cam.

    i just changed mine today, altho i couldnt test it as my dash is out Sad

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    1997 blaze GTI-6 bought january '11 £800

    Spend to date on parts £827.88

    Posted 4th Mar 2013 at 22:35
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    dazzy6

    Newbie

    Location: betws y coed

    Registered: 18 Jan 2013

    Posts: 28

    Status: Offline
    Post #9
    darzmat wrote:
    use a screw driver against your ear and try pin point the sound.

    put it on top of the eaxhaust cam cover, and then on the vacuum pump which runs off the near side of the exhaust cam.

    i just changed mine today, altho i couldnt test it as my dash is out Sad


    theres defo vacuum there when u hover the oil cap over its hole and u can see the oil geting splashed around too , dont know if ive done that right lol.

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    darrenevans

    bianca white rallye t706wox
    Posted 4th Mar 2013 at 22:45
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    stan_306gti6 Forum Admin

    Location: Kent

    Registered: 18 Jan 2004

    Posts: 21,768

    Status: Offline
    Post #10
    More than likely a vacuum pump rattle, they are quite a common thing to develop a loud rattle and given that they are driven by the exhaust cam it does make the noise sound like it's exhaust cam related. Yes

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    Posted 5th Mar 2013 at 06:19
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