BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)


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      05-23-2019, 12:01 PM   #1
suspenceful's Avatar

Drives: 2008 135i, 2009 BMW 335i
Join Date: Feb 2014
Location: WI

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The Ultimate Guide to N54 Spark Plugs (Install, Gap, etc.)

Before I start heavily modifying my daily driver BMW 335i, I'm focusing on maintenance. This week I changed the spark plugs and ignition coils and wanted to shed some light on the process. I filmed an in-depth video and wrote a guide to help others properly replace, gap and install their new plugs & coils. I wanted to share this here because I use the same process for my 135i.

As you begin to modify or maintain your BMW 135i, 335i or 535i, you must address the ignition system. Spark plugs and ignition coils are the achilles heel of the N54. These two parts are common sources of misfires if not taken care of. Not only is it important to replace them with upgraded pieces, but it’s crucial to install the spark plugs with the correct gap.

Ultimate N54 Spark Plug Guide:

I even used my Dragy to get some real-life performance results before and after swapping the plugs & coils!

I guarantee if you watch the video or read my complete blog post, you'll learn something that you didn't know before. I'm a fellow enthusiast, so please let me know what you think
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      10-14-2019, 05:52 PM   #2
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Drives: 2010 135i/M-Spt,Blk Met,Din S2
Join Date: Aug 2011
Location: Charleston, SC

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Great job, easy to follow and hopefully repeat.
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