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Thread: Checking Valve Clearances - 1.9CDTI (Z19DT - 120)

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    Default Checking Valve Clearances - 1.9CDTI (Z19DT - 120)

    According to the service schedule, the valve clearances on the 1.9 120bhp 8v engine (NOT the 150bhp 16v) need checking every 40k/4 years.

    From what I can gather the 150 16v uses hydraulic lifters, so is self-adjusting, but the 120 8v uses shims. Anyone ever adjusted them on a 8v?

    The actual procedure seems easy - point cams upwards and check clearances, but Vauxhall seem to specify two special tools when doing this job EN-46797 and EN-46799 which presumably help you to comress and then hold the valve down, so you can take the old shim out (if necc). anyone know what these tools are or look like?

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    VIP-Member Damo77's Avatar
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    Vehicle : Vectra

    Trim : SRi

    Engine : 1.9 CDTi 8v

    Year : 55

    Mileage : 92,000

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    Quote Originally Posted by snapsnap View Post
    Anyone know what these tools are or look like?
    Sorry for digging up an old thread but thought it may help others

    I'm going to be looking into doing my valve clearances when it gets a bit warmer but just had a search on Google to see if I could find any of the special tools required and found these:

    EN-46797

    EN-46799

    In case the links no longer work at a later stage, I took a quick pic of the pages and have attached them below to help others

    Attachment 48971

    Attachment 48972

    Hope it may be of some use to you guys

    Damo
    Already replaced:-
    Alternator,
    Drilled/Grooved Discs & Pads, Eibach Springs, EGR Valve, 50W HID's 6000k, K&N Panel Filter, LED footwell & boot lights

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    The first tool is used to depress the valve and the second to hold it down. When I was looking into this I too found those tools, but just ended up using a vary large flat blade screwdriver to depress the valve and then a stubby flat blade screwdriver to hold the valve down.

    Depressing the valve is easy; it just needs a good hard downward shove, keeping the thing held down while wedging something between the valve and cam is the tricky bit. You get pretty fatigued after about 5 - 10 secs!

    The only tool worth getting is the second one, but it is totally doa-ble with just two screwdrivers, a magnetic tool and pliers.

    First time round is also a pig as you need to remove the valve shims to see what size they are (to allow you to order correct replacements), reassemble, order the new shims, remove shims again at a later date and insert correct ones.

    Second time round is easier as you already know the valve shim sizes that are installed.

    Also, to get the cam lobes pointing upward to allow the clearances to be checked, just crank the engine on the starter

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    Duplicate post
    Last edited by snapsnap; 18th November 2011 at 10:30.

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    What is the clearance for exhaust and inlet? is it set hot or cold?

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    Vehicle : Vectra

    Trim : SRi

    Engine : 1.9 CDTi 8v

    Year : 55

    Mileage : 92,000

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    According to the Haynes manual:-

    Valve clearances
    Engine cold (inlet and exhaust).................0.30 to 0.40 mm
    HTH
    Damo
    Last edited by Damo77; 22nd January 2012 at 09:46.
    Already replaced:-
    Alternator,
    Drilled/Grooved Discs & Pads, Eibach Springs, EGR Valve, 50W HID's 6000k, K&N Panel Filter, LED footwell & boot lights

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