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Thread: Lube your swirl flaps!!!

  1. #1
    Regular Member Derek Mc's Avatar
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    Default Lube your swirl flaps!!!

    So, out driving around the motorways today again and my mind got to thinking about the swirl flap, more especially the failure of them that we hear of all to frequently.

    When it happens the bar pops off and before it is "fixed for a quid" temporarily, the practice is to spray the rod holes where they emerge from the inlet to free them off.

    My wonder on this, should we devise a small fix it How2 to develop a method to do some preventative maintenance and run some light oil down into the bushings?

    If it can buy a car several thousand miles extra when they have actually failed, can we extend the life of a good'un this way?

    Any thoughts?

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    Vehicle : Golf 7

    Trim : GTD

    Engine : 2.0 TDI 184PS

    Year : 2014

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    Default

    The main issue m8 is really with the old ones, the bearings are simply weak and collapse. On the newer ones well like most I would say the issue is the EGR valve letting gases into the inlet manifold causing it to 'gunk' up. This perhaps causes the flaps to jam and the system at the weakest point fails ie the switch rod. Possibly worth a try I suppose but with the circumstances mentioned I wreckon it wouldn't prevent much imo.

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    Vehicle : Vectra

    Trim : Design

    Engine : 1.9CDTi

    Year : 2005

    Mileage : Lots

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    Don't see why not. I give mine a good soak in WD-40 every now and then to try and shift any gunk buildup.

  4. #4
    Regular Member owen_999's Avatar
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    Vehicle : Vectra SRI 150

    Trim : SRI

    Engine : 1.9cdti 150

    Year : 2007

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    What are these swirl flaps and what do they do?

  5. #5
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    Vehicle : Golf 7

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    Quote Originally Posted by owen_999 View Post
    What are these swirl flaps and what do they do?
    Theory goes they increase torque due to increasing the velocity of the airflow into the cylinders at low rpm - this is due to them being partially closed over. Above 2,500rpm roughly they open for full air flow and therefore maximise power output.

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    Regular Member owen_999's Avatar
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    Vehicle : Vectra SRI 150

    Trim : SRI

    Engine : 1.9cdti 150

    Year : 2007

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    Where abouts are they on the engine? Can they be removed?

  7. #7
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    Quote Originally Posted by owen_999 View Post
    Where abouts are they on the engine? Can they be removed?
    On the inlet manifold and only on the 150. Some have glued them open.

  8. #8
    Regular Member Derek Mc's Avatar
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    They are internal mounted on four of the inlet tracts on the CDTi150 engine especially as this is the engine I refer to and live down below the fuel rail you can see them just on this picture with the small black actuator mounts
    IMG01114-20100521-1443.jpg
    They are prone to seizing on earlier cars (after mid 07 they gained an upgrade) causing a fault code and somewhat smokey MOT failing running. The usual fix apart from gluing them open is to replace the inlet manifold at a cost of several hundred quid.
    Cause of failure is the Euro IV emissions needing to recycle the crankcase air (and loads of evaporated oil) and draw in a percentage of the exhaust to reburn the soot again this with the oil combine to make a glorious new chemical substance with the Chemical name of Dat****inblackshoite hydroxide which is the root cause of the failure.

    Apart from that they do a great little job

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    Quote Originally Posted by Derek Mc View Post
    They are internal mounted on four of the inlet tracts on the CDTi150 engine especially as this is the engine I refer to and live down below the fuel rail you can see them just on this picture with the small black actuator mounts
    IMG01114-20100521-1443.jpg
    They are prone to seizing on earlier cars (after mid 07 they gained an upgrade) causing a fault code and somewhat smokey MOT failing running. The usual fix apart from gluing them open is to replace the inlet manifold at a cost of several hundred quid.
    Cause of failure is the Euro IV emissions needing to recycle the crankcase air (and loads of evaporated oil) and draw in a percentage of the exhaust to reburn the soot again this with the oil combine to make a glorious new chemical substance with the Chemical name of Dat****inblackshoite hydroxide which is the root cause of the failure.

    Apart from that they do a great little job
    Almost wet myself at that.

  10. #10
    Full Member Leemarksmith's Avatar
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    Default

    So do they suck additional air in from the engine bay area?

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