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Passat engine noises

  • 06-10-2011 12:06pm
    #1
    Tea drinker
    Registered Users, Registered Users 2 Posts: 2,817 ✭✭✭


    What's do you make of these noises on this passat, she is generally a bit tappy, but check the dieseling noise around 1100 rpm at the end of the vid, as I put it under light load at low RPM's
    http://www.youtube.com/watch?v=zBpOAUNtMww

    I have a dose of dipetaine in it now, can that cause dieseling? Should mention it's a 1.8T petrol not a diesel!

    Nothing seems loose, I'm lost. Some tappety noise off throttle at 1200-1400 rpm leads me to believe something very bad is going to happen.


Comments

  • #2
    Hal1
    Registered Users, Registered Users 2 Posts: 8,720 ✭✭✭Hal1


    I was gonna say that sounds ok for a diesel. A tappety noise could mean the valve clearances need doing. Is she smokey at all?


  • #3
    Tea drinker
    Registered Users, Registered Users 2 Posts: 2,817 ✭✭✭Tea drinker


    It's a bit tappety - probably the cam chains. It's not smokey, never throws codes and never uses oil or shows low oil pressure.
    That's why I was surprised at this noise and slight vibration, I really thought I was looking at some misery........so I brought it to local garage and was able to make the noise (with the car!) for the chap while he had his head under the hood. He diagnosed the problem for me and I could see myself what it was - fanbelt tensioner hopping on the belt and hitting it's endstop.
    I fitted a new belt and tensioner this afternoon and she seems grand. the old tensioner although free and spinning nice had some rumble as well so it's slightly quiter. I'm gonna post another vid showing the difference.


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