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VVT Engine noise

Discussion in 'All Model Vauxhall / Opel / GM / Holden How2' started by M32Guy, Feb 27, 2015.

  1. M32Guy

    M32Guy M32 Specialist

    Likes Received:
    Astra H VXR Arctic Corsa C 1.4 Auto
    There's quite a few threads on here of people complaining of engine rattles, tapping noises or petrol engines generally sounding like a diesel. This only applies to engines fitted with variable valve timing or VVT for short. The video below is of a VVT engine (in this case a Z18XER) with a failed inlet camshaft phasing pulley. If you listen carefully you will hear a louder noise coming from the rear pulley (inlet). The failed pulley may also trigger a fault code and put your engine managment light on. If yours sounds like this you will need to replace the failed pulley (ideally do the pair) along with the timing belt. It's also advised to change the oil seals behind the pulleys while they are off and give it a fresh oil and filter change. The water pump is ran off the alternator belt on the VVT engines so no need to change that. Be aware that the parts alone are over £400 from Vauxhall.

    Regular servicing and using the correct high quality oil will ensure a long service life from your new pulleys once replaced. If your engine doesn't sound like this yet but it's been a while since your last service, well you now know what can happen and how to help avoid a potentially very large bill.
    Harrydog1 likes this.

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