Well I found out what was causing the rough idle

Discussion in 'General chat' started by Wilseus, Feb 4, 2019.

  1. Wilseus
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    Wilseus Site Supporter

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    EGR.jpg
    The EGR valve wasn't clogged like I thought, it's damaged! I don't know if it's clear here, but one side of the lip of the pipe entering the valve that the plunger fits into (the side facing the camera) has been corroded or worn away somehow. I guess it leaked exhaust gases into the intake even when closed.
    The valve is held open here using a vacuum pump.
     
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  2. E39mad
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    E39mad

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    I seem to remember replacing mine with a bypass
     
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  3. JasonH
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    JasonH

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    Well done finding that!
     
  4. Wilseus
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    Yes I've been weighing up the pros and cons of doing that, including the legality of it.
     
  5. Wilseus
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    Well the previous owner reckoned that's where the problem was, it came up when the codes were read.
     

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