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Thread: Changing the sparkplugs on a 3.2

  1. #1
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    confused Changing the sparkplugs on a 3.2

    Right as I recently purchased the car and it's idle not too good, I thought I give the ICV a clean and change the plugs.

    1. Remove and clean ICV - Done

    2. Replace and replace spark Plugs - Not Done

    Apart from the fact it appears 20 times more complex to change the plugs than on than on the vectra B 2.5 I have a more fundamental problem.

    Removed the Ecotec cover to remove the bolts holding the plenum only to find my 1/2" drive will fit down the hole (just) but my adapter/Torq won't

    So my question is, what size torq is it and who does a bit that will fit ??

  2. #2
    Regular Member v6boy's Avatar
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    Vehicle : Vectra

    Trim : GSI

    Engine : 3.2 V6

    Year : 2003

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    Sorry i haven't got the answer to your question mate, but just wanted to point out that changing the plugs might not cure your problem. Myself and a few other GSi owners on here have had a problem with a slight murmur/ when idling. Revs do not fluctuate at all, but there's definitely a slight murmur. Used to drive me insane but have learned to live with it now.

    see here: http://forum.vectra-c.com/showthread.php?t=7632

    Been to vauxhall many times to try and get to the route of the problem but no joy.

    I would be interested to know if changing your plugs helped to resolve this problem.

    Cheers

    Russ

  3. #3
    Regular Member Gsi3.2's Avatar
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    i use either the screwdriver adaptor and 1/4 drive kit with a screwdriver style bit, ot a torx allen key set...one those bolts are undone ( very tight as they bimettalic corrode in) it's more or less the same as the old veccy B...

    if you want to drop by again i'll give you a hand with it..

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    Update.

    The rough idling is causing the engine management light to flash and if left too long the light changes to a permanently on state. Once normal driving is resumed it goes out.
    Popped into a local garage today to get the fault code read, he checked the codes, cleared them and then started the engine again and back they came.

    The codes were:

    PO300 Random/Multiple Cylinder Misfire
    PO301 Cylinder 1 Misfire
    PO303 Cylinder 3 Misfire
    PO305 Cylinder 5 Misfire

    PO070 Ambient Air Temp Sensor.

    He lifted the bonnet for a listen and said he could hear the misfire (better hearing than me, i couldn't !!).

    Although it does run rough/lumpy at idle it drives OK with no obvious misfire. I guess this is an early warning and that the problem will only get worse.

    Anyway looks like the likelyhood is that it need a new coil pack (1,3,5) so just checking round to get the best price.

    When the coil pack went on my old vectra B V6 it went from fine to running like a traction engine almost straight away.

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    Quote Originally Posted by HHH View Post
    Update.

    The rough idling is causing the engine management light to flash and if left too long the light changes to a permanently on state. Once normal driving is resumed it goes out.
    Popped into a local garage today to get the fault code read, he checked the codes, cleared them and then started the engine again and back they came.

    The codes were:

    PO300 Random/Multiple Cylinder Misfire
    PO301 Cylinder 1 Misfire
    PO303 Cylinder 3 Misfire
    PO305 Cylinder 5 Misfire

    PO070 Ambient Air Temp Sensor.

    He lifted the bonnet for a listen and said he could hear the misfire (better hearing than me, i couldn't !!).

    Although it does run rough/lumpy at idle it drives OK with no obvious misfire. I guess this is an early warning and that the problem will only get worse.

    Anyway looks like the likelyhood is that it need a new coil pack (1,3,5) so just checking round to get the best price.

    When the coil pack went on my old vectra B V6 it went from fine to running like a traction engine almost straight away.
    sounds a little worrying though i hope it does the trick

  6. #6
    Regular Member Gsi3.2's Avatar
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    it shouls do, they are all fired by the same cassette..

    VX list them out as Part no,

    9118114 £97.50 +V retail or £73.13+V tradeclub..

    if you want one HHH, i'll pick you one up..you've got my phone number..

  7. #7
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    GSI 3.2 Thanks for the offer but I've had a bit of a result got it for £64.63 including vat + £7 postage from here.

    http://www.vauxcentre.co.uk/index.ph...on=Prod_detail


    Spoke to him and he said the website price was incorrect, but would honour the price, result

    Should be with me tomorrow.

  8. #8
    Regular Member Gsi3.2's Avatar
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    cracking deal mate....

  9. #9
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    yer pleased with the price,should of ordered more @ that price, lol.

    Just got to hope it fixes the problem (fingers crossed).

  10. #10
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    Final Update

    Well Saturday turned out to be a very busy day.

    Removed the Plenums, changed the sparkplugs (previous owners garage had left/fitted vauxhall plugs to 1,3,5 and bosch to 2,4,6. WTF !! ).

    Anyway put new Bosch Plugs in
    (Info : Bosch super 4 plugs reference FGR8KQEO are a direct replacement for FGR8KEQE although they look slightly different. The additional "O" in the reference means they are LongLife, confirmed by Bosch Technical support).

    Swapped out the old coil pack on 1,3&5 with the new one and reassembled.

    Went for a quick drive and although the EMS light did not come on the symptoms remained.:

    So Looking back through the old service print outs I noticed that the same Coil pack had been replaced shortly after the car had been serviced and the cambelt and rollers replaced (I know i should of looked 1st.). There was however no mention of a waterpump being changed, so being in spanner mode I decide I will get a pump and fit it.


    So after taking all the parts off to access the waterpump , I decide to go the whole hog and remove the cambelt cover to gain easier access and so that I can confirm the cambelt and rollers look newish (only supposed to have been replaced 2000 miles ago).

    So remove cover, remove waterpump and then check the cambelt.

    Check the timing once, twice and a third time for luck and confirm that the the timing on cam 1 is out by a tooth and cam 2 is out by 2 (Cylinders 1,3,5).

    So after locking the 4 cams and the crankshaft in the correct position I proceed to remove the belt and then replace, adjust the rollers and set the tensioner.

    Turn it round on the crank to check the timing and confirm it's spot on, turn it round again and its still spot on, 1 more for luck and it's still spot on. One final adjustment of the tensioner and it's time to put it back together.

    Fit new water pump and add coolant, bolt it all back together and it's time for the all important test drive.

    10 mins later and i am back sitting on the drive no more EMS lights and it now idles as it should.

    So the initial diagnoses of misfire on 1,3,5 was correct, it wasn't the coli pack that was the main cause but the fact that some professional garage couldn't set the timing up correctly.


    Apologies for rambling, but I am feeling rather pleased with my days effort.

    Thank god the sun was out, almost made it enjoyable.

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