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  #1  
Old 10-06-2017, 06:55 AM
turbo blackbeard turbo blackbeard is offline
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Default Spark plug replacement

Hi guys,

Going to replace my spark plugs myself. Going for NGK's 3641 laser platinum spark plugs PKR7A F.

Do I need to replace the rubber boot as well as the plug? I have hear some people say you dont need to and others say you should.
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Old 10-06-2017, 10:11 AM
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Dave P Dave P is offline
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I didn't replace the rubber boot on mine?, do they mean the socket? #3

http://www.realoem.com/bmw/enUS/show...diagId=12_2009
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Last edited by Dave P; 10-06-2017 at 10:14 AM.
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Old 10-06-2017, 10:15 AM
turbo blackbeard turbo blackbeard is offline
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Thanks for the tip. I will be diving in soon as the various bits arrive. I'm not particularly good with cars but think I can probably manage this one. Looked at a few videos too :)

https://www.youtube.com/watch?v=GN618su1psU
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Old 10-06-2017, 10:22 AM
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There's a good guide here,





http://www.z3mcoupe.com/forum/showthread.php?t=16802
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Old 10-06-2017, 12:15 PM
turbo blackbeard turbo blackbeard is offline
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I think they meant the socket. Did you replace that?
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Old 10-06-2017, 12:20 PM
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Quote:
Originally Posted by turbo blackbeard View Post
I think they meant the socket. Did you replace that?

no as they all looked fine
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Old 15-07-2017, 07:24 AM
turbo blackbeard turbo blackbeard is offline
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Finally getting around to it.

I thought I needed to set the spark plug gap. There is a picture on the spark plugs showing a screwdriver opening the gap with a cross through it. Is this saying dont reopen the plug gap or that it shouldn't be closed in the first place?

I also cant find the correct gap width. Does anyone have this?

Thank you in advance
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Old 15-07-2017, 08:23 AM
Jon_Bmw Jon_Bmw is offline
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On an s54 (and probably s50) they use iridium plug and you would damage the electrode if you gapped it with a screwdriver. Any adjustment would need to be done by altering the ground plug only.

I am pretty sure they do not need adjusting from the factory setting assuming you are using the manufacturer approved plug.
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Old 15-07-2017, 08:39 AM
turbo blackbeard turbo blackbeard is offline
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Here is the picture. I went with the plugs as they were recommended in another thread. I thought you had to adjust the gap to the manufacturers recommendation (I bought the gap gauge and everything!).

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Old 22-07-2017, 11:30 AM
turbo blackbeard turbo blackbeard is offline
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bump as I'm still not sure on this on. Can anyone help?
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