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Thread: Astra Van 1.7 TD (GM Engine) Low Blow Cambelt trouble - HELP!!! PLEASE!!

  
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    Angry Astra Van 1.7 TD (GM Engine) Low Blow Cambelt trouble - HELP!!! PLEASE!!

    Hi guys,

    Ive attempted to do a cambelt change on my astra van (99 T plate - 1.7 TD GM Engine not isuzu). Being the dumb ass that i am rushing all the time i have not locked the injection pump sprocket up before taking the belt off.

    I know have a car that is either out of time or just knackered in general. Both bottom and top are at top dead centre (TDC) but the injection pump sprocket is well out.

    My theory is is that if i remove the pump sprocket and put it back to where i can lock the pin in, whilst the others are at TDC, then would this fix my problem?

    The only reason i am hesistating to do so is because when i try to adjust the pump sprocket it seems to be on a spring mechanism and i dont want to totally knacker my van if there is another way around it.

    What would happen if i did take the sprocket off and adjust it etc? or is there another way to adjust it. I have tried to manually move the sprocket and lock it in place but i can not seem to find the hole behind the sprocket to lock the pin into.

    Any hep would be gratefully recieved.

    Thanks

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    paul.spencer's Avatar
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    Hi B19GSW,

    I sent you an email with some info that may (or may not) help...

    Cheers, Paul

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    Exclamation

    ive done the same i never marked it up but mines a mk4 but should be the same principle where do i go from here

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    Im sorry to drag up a year old thread, but i dont want to start another when this one covers my problem. This is aimed at paul as he seems very clued up about it.

    I have a 1.7 td gm low blow engine and my fuel pump went, ive sourced a new one and am planning to fit it to the van, im going to do the cambelt at the same time. How do i go about timing the pump up properly without a dial? Il lock the and mark the other parts, but with the pump I dont have a clue, also im going to have to remove the gear from the old pump and fit it to the new one as it didnt come with one attached.

    Thanks in advance for your help.

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    Hi bananavan,

    I just sent you a pm. Its easier to email me as there's a lot of info, attachements, images if you are going to do this.

    Cheers, Paul

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    Just thought id let you all know ive fixed my van, i changed the diesel pump and changed the timing belt, no dial gauge or special equipment needed ( unless you count tipex to mark the timing lol) i just want to thank paul for all the information and help. Van runs sound now, and should keep me motoring for a while longer.

    And to everyone that has had the same problem, dont take it to vauxhall or a garage straight away, read up and have a go if your confident, its not as hard as you think as long as you mark the timing before hand!

    Thanks again

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    woohoo! well done bananavan. bet you're pleased. Cheers, Paul

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    astra

    Quote Originally Posted by paul.spencer View Post
    Hi B19GSW,

    I sent you an email with some info that may (or may not) help...

    Cheers, Paul
    hi paule could you send me the info wat u sent the lad on this post as i have the done the same thing thanks

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    could u send me a email with the info paule.spence as i have done the same as b19gsw thanks

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