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Thread: Dealer cam belt change 3.2 V6

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    Default Dealer cam belt change 3.2 V6

    Took the car in today for its cam belt replacement and i'm still without it now due to a problem they have encountered. Went to collect the car to be informed 'it has a misfire' and 'the belt has been fitted one tooth out on one of the banks'
    Now seriously worried they have done some permanent damage although the dealer assures me everything is fine and the belt just needs refitting correctly.
    I had some nagging doubts the moment I handed them the keys this morning. Would one tooth out on a bank be enough to cause valves to meet pistons or not?

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    Full Member Big Sig's Avatar
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    i don't know but would be looking for a serious discount!
    Now I need a turbo to keep up!

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    Ex Vec-C Admin ed taylor's Avatar
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    Vehicle : Vectra Estate

    Trim : Elite

    Engine : 3.2 V6

    Year : 04

    Mileage : 000

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    Mark, gsi3.2 is the one to answer that question. He will be along later to put your mind at rest hopefully.

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    Regular Member Gsi3.2's Avatar
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    Quote Originally Posted by Nigel Ash View Post
    Took the car in today for its cam belt replacement and i'm still without it now due to a problem they have encountered. Went to collect the car to be informed 'it has a misfire' and 'the belt has been fitted one tooth out on one of the banks'
    Now seriously worried they have done some permanent damage although the dealer assures me everything is fine and the belt just needs refitting correctly.
    I had some nagging doubts the moment I handed them the keys this morning. Would one tooth out on a bank be enough to cause valves to meet pistons or not?
    firstly, one of the cams being out of 'time' to the rest, particularly if it's the one sensed by the camshaft sensor, will caused a misfire...

    the belt being fitted one tooth out is easily done..BUT they shouldn't have run it up UNTIL they were satisfied that the belt was correctly aligned AFTER a minumum of two turns over BY HAND..it's a basic fundamental mistake that has been made..

    The only ray of good news i can offer, is that unless it has been revved hard, the valves 'shouldn't' have collided with the pistons...it is an interferance engine, but hopefully whoever put a belt on it, realised their mistake after starting it but turned it straight off..

    What they SHOULD have then done, is to strip it down again and refit the belt correctly, wind it over 2 or 4 times by hand to recheck the alignment and then rebuild.. the engine should then be started when you know it is all in time..any damage to the one bank of valves will then be apparent by poor runnig. if they are bent at all the engine will run very poorly and quite unlike the smooth engine the V6 is.. if they need further proof of a valve seat seal they can do a compression test on the engine to check the cylinders are holding pressure..

    it is ENTIRELY their mistake.. and a Poorly educated one at that... As i have said many times.. you need to be careful doing a belt on the 3.2 as there is so much that can go wrong..

    and further work or repairs MUST be met by them...in fact, ask them to do a compression test to show you that the valves are sealing....if the figures are good, and the engine runs smoothly , then it's all going to be fine..

    to repeat the job, or in the initial job, they should have taken under 2 hours..My vote is you don't even pay for the belt job in the first place... unless yours was last job of the day, it should have been fixed or at least reset today...

    lets hope it's better news tomm..

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    Many thanks for the replies. I'll wait and see what tomorrow brings. If the dealer calls to say the car is ready I WILL NOT be parting with ANY cash until I have driven the car, with a technician in the passenger seat if necessary.

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    Regular Member Gsi3.2's Avatar
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    lift the bonnet.. listen to the engine..... as you pick the revs up 'slowly' it should be a smooth response from the engine... any misfire will present itself as a shake on the engine mounts...

    just booting it to rev it will show you little..

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    Vehicle : Insignia

    Trim : Sri

    Engine : 140 Ecoflex S/S

    Year : 2013

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    Quote Originally Posted by Nigel Ash View Post
    Many thanks for the replies. I'll wait and see what tomorrow brings. If the dealer calls to say the car is ready I WILL NOT be parting with ANY cash until I have driven the car, with a technician in the passenger seat if necessary.
    Was it a VX main stealer

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    Quote Originally Posted by gtr1000 View Post
    Was it a VX main stealer
    Yes, why do you ask?

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    Is it possible to miss out a tooth if they used the locking kit correctly? Didn't think it was...?

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    it is if you leave too much slack on the front side of the belt and don't take it up with the valley adjuster in the vee. just fitting the belt and taking up the tension at the tensioner is not the way to do it.. it's no-where as easy as the 1800's....a locking kit only helps so much, the rest of it is down to the fitter..

    as i said before.. too much haste and not enough learning.. taking that extra few minutes to wind it by hand to check saves a load of heartache..

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