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Thread: Cleaned the throttle body today,.....

  1. #1
    Regular Member omega63's Avatar
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    Vehicle : Insignia 2.0L CDTI SRI hatchback

    Trim : Black leather

    Engine : A20 DTJ 128 HP

    Year : 2009

    Mileage : 126,000

    Thumbs up Cleaned the throttle body today,.....

    Thought i,de check and clean the throttle body today, but found the upper and lower inlet manifolds to be almost blocked. It looks like they have never been cleaned before the engine Y30DT as done 85k....

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    Full Member spennny's Avatar
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    Got any "After" pics

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    Regular Member Celes's Avatar
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    Vehicle : Opel Signum

    Trim : Sport

    Engine : 3.0 CDTI

    Year : 12/03

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    I've done this on my old Y30DT when it had 160k on the clock...you should have seen that The lower manifolds are very difficult to get to and could get tricky without the right spanners so I never removed and cleaned those 2 Haven't noticed any difference after, just VERY dirty fingernails

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    Regular Member omega63's Avatar
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    Vehicle : Insignia 2.0L CDTI SRI hatchback

    Trim : Black leather

    Engine : A20 DTJ 128 HP

    Year : 2009

    Mileage : 126,000

    Thumbs up

    Quote Originally Posted by Celes View Post
    I've done this on my old Y30DT when it had 160k on the clock...you should have seen that The lower manifolds are very difficult to get to and could get tricky without the right spanners so I never removed and cleaned those 2 Haven't noticed any difference after, just VERY dirty fingernails
    It took over 1 hour alone just to scrape the thick black oily, sludge, and carbon build up in the upper manifold. My hands/fingers where covered in it, took the upper manifold to work and cleaned it as best as i could in the engine degreaser bath. Had to leave the lower manifolds as i need the car at weekend, going to Lyme Park on Sunday. Rebuilt it to night and road tested maybe there is alittle difference.....

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    Thanks for that!

    Might have a go at removing the butterfly plate on mine!

    Partly blanking the EGR valve or removing the butterfly plate from the throttle body (if it controls airflow for EGR on the V6?) will help cut down on soot build up quite considerably.
    Last edited by diesel dog; 15th September 2010 at 10:43.

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    OMG!! That is dirty! I am wondering what mine looks like not, its done 93k & i bet its never been off..

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    Regular Member omega63's Avatar
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    Vehicle : Insignia 2.0L CDTI SRI hatchback

    Trim : Black leather

    Engine : A20 DTJ 128 HP

    Year : 2009

    Mileage : 126,000

    Thumbs up

    Quote Originally Posted by diesel dog View Post
    Thanks for that!

    Might have a go at removing the butterfly plate on mine!

    Partly blanking the EGR valve or removing the butterfly plate from the throttle body (if it controls airflow for EGR on the V6?) will help cut down on soot build up quite considerably.
    I think the only way to stop this building up is to blank the egr valve off completely, but not sure what effects this would have on the engine management systems.......

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    Regular Member omega63's Avatar
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    Vehicle : Insignia 2.0L CDTI SRI hatchback

    Trim : Black leather

    Engine : A20 DTJ 128 HP

    Year : 2009

    Mileage : 126,000

    Thumbs up

    Quote Originally Posted by mitch1965 View Post
    OMG!! That is dirty! I am wondering what mine looks like not, its done 93k & i bet its never been off..
    Hi Mitch pretty sure this is why it blew the smoke/soot out over "etd" CAVVY, what you see in the pictures mostly effects diesel engines, can effect petrol engines but NO!!! where as bad as diesels....

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    No real findings on blanking the egr atm, ut if you do the eml will be on all the time unless you leave it tied up & connected as for the grime, I may investigate mine,,,, mot tomorrow(thurs), see what happens there first..

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    Completely blanking the EGR valve will usually throw up an 'EGR FLOW' code on the V6. Putting a few small 3 or 4mm holes in the blanking plate will provide sufficient pressure change when the EGR valve opens to fool the MAP/boost sensor. You will still be cutting back by at least 75% on exhaust gas/soot flow.

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