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Thread: Anyone ever cleaned the throttle body?

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    Regular Member Ben999's Avatar
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    Default Anyone ever cleaned the throttle body?

    I changed my spark plugs today while the weather was nice and I was aching a tad from football. For some odd reason I decided to pull the throttle body apart and decided this looked far too filthy


    After a lot of scrubbing it didnt look much cleaner to be fair, but I had got a lot of carbon and crap off it.

    The difference it makes.........? AMAZING! Really suprised me. The throttle is now a lot LOT smoother. And it picks up a tad quicker when you put your foot down. Not suprised it made a difference as it was probably sticking a little bit with all the build up. But really suprised about the difference it made.

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    Full Member Teamtom's Avatar
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    we have to do this a fair bit on the VW's. An old toothbrush and some brake cleaner/carb/clutch cleaner. hold the butterfly open with one finger and polish the walls of the bore. usually comes up a treat!!!

    and yes you are correct, will make the world of difference. Shows you how dirty the air is that you are inducting!!!
    Rubbin'z racing Harry!


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    Regular Member Ste's Avatar
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    I would concur. A cloth and a toothbrush dipped in petrol also worked well. On initial start up the engine speed goes a touch higher and then settles - well it did on mine when I cleaned mine

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    Regular Member stuk2000's Avatar
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    can this be done on the 2.2direct??

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    Regular Member rushy's Avatar
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    Nasty isn't it, the 2.2 does suffer from this, most of it is from the oil breather on the head, the rest comes from the EGR port just behind the TB (the bit that sticks up). Two ways to solve it are to blank the EGR which is very simple in the 2.2 and to fit an oil catch tank. Personally I just keep it clean.
    Quote Originally Posted by stuk2000 View Post
    can this be done on the 2.2direct??
    Sure can mate, 4 bolts and an plug and it just pulls off.

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    Regular Member Ben999's Avatar
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    Really simple to do. On the 2.2 at least. I might do a how to on it when Ive got a bit of time

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    Regular Member Ste's Avatar
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    I cleaned mine in situ, just removed the pipes, plugs and tubes and away I went. 1.8 petrol

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    Regular Member Ben999's Avatar
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    I did take it out, obviously. But it could just as easily be done in situ, as where you want to concentrate on is where the butterfly meets the body. Then its just a case of undoing the air hose!

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    Full Member tubby's Avatar
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    any pics need 2 do mine

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    Regular Member Ben999's Avatar
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    Quote Originally Posted by tubby View Post
    any pics need 2 do mine
    What engine do you have?

    (apologisies if this is patronising, but for the benefit of all I will use very basic terms.)

    Same really applys to all engine.

    The throttle body is the bit that connects the air intake from the air box to the engine. find the airbox (on the left as you face the car) which has two large pipes coming out of it. One will go to the front of the car behind the grill and take the air in. The other will lead to the throttle body.

    Undoe the hose clip connecting the large pipe to the throttle body and with a tug the hose will come off.

    At this point you can clean it in situ, although I find it best to remove it completely

    You will see next to the hose a wiring loom attatched. Unplug this (it may have a little grey/yellow lock which you can pull out, then squeeze the back of the plug together and it should pull out.)

    There are then four bolts which quite simpily undo. (I know on the z22se one of them is a nut, undo this, take of the clip and there is a sort of two way bolt which will require a spanner rather than a socket.)

    Then you can just pull it away. Use an old toothbrush and some carbon/brake dust cleaner and give it a good scrub, holding the butterfly open with your fingers.

    Then simpily the reverse to put it back together!

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