E46 320 E46 320d Glowplug advice
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  1. #1
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    Stal1878's Avatar
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    E46 320d Glowplug advice

    As some of you know I just bought a 2004 320d and am getting rid of the swirl flaps. With the manifold off I can see that the glow plugs cannot be changed with it in place.
    If a glowplug were gone would there be a warning light on the dash? The car starts fine, but its will warm so you can't tell if they are all working. I don't want to replace them unless I have to as the last thing I want is to snap one off in the head....

    While I'm here, with the swirl flap delete do I have to keep the actuator for them or do you remove it and block the vacuum pipe?

    Cheers

  2. #2
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    Hiya Ben, a failed glow plug won't illuminate the eml mate but it will flag up on diag scan.
    Up to you whether you remove or leave the swirl flap vacuum pump,
    if you do remove it you must block the vacuum pipe that feeds it.



    Sent from my GT-I9100

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    Stal1878 (22-09-2012)

  4. #3
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    Thanks Simon, thats what I was worried about :( Is it OK to re-connect the battery with the engine apart, I was worried about the injectors being unplugged, didn't know if they are coded to the ECU?
    Where abouts do you find out about the glow plugs on INPA?

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    I'm sure someone will say different but I'm a safety 1st kinda guy so I personally wouldn't reconnect the battery with the engine in bits!

    Using INPA just scan the engine for errors & if there's a glow plug out it'll flag up, no.1 pot is by the radiator no.4 is by the bulkhead.

    I assume you're part way through the deflap then?

    Edit - just read your other thread Ben, Good work there mate

    Sent from my GT-I9100

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    Yea, I have the manifold off so I can't check the codes for the glowplugs unless I reconnect the battery as is :(

  7. #6
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    Dug this info out for you Ben..
    Quote Originally Posted by E61trouble
    You need to strip everything off the manifold because caustic soda is evil stuff and disolves anything organic (rubber) or aluminium but after just 6 hours in a plastic container with 0.5kg of dry soda it has disolved all the engrained oil/soot mix is every crevice and done no damage to the manifold. Again it is nasty stuff and you need to wear latex cloves but I am amazed it is by far and away the best way to get a good as new inlet manifold.
    You can test the glow plugs in situ with a multimeter, probe the top and body of the gp & iirc if good they should have a resistance of 0.5-1.5 ohms.

    this should help mate ....Glow plugs 101 ***Ver. 2.0*** - TDIClub Forums
    Last edited by simonsays; 22-09-2012 at 15:02. Reason: link added

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  9. #7
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    Haha I am such a nonce, worrying about INPA when I could have done them the old fashioned way
    I have stripped the manifold of sensors, gaskets and pipes ready for its bath. I just hope the brass threaded inserts survive it!
    Thanks again Simon

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    simonsays (22-09-2012)

  11. #8
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    No probs Ben

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