GLK-Class (X204) Produced 2008-2014

2015 spark plug replacement on driver side access

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Old Feb 13, 2020 | 02:30 PM
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adamant118's Avatar
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2015 spark plug replacement on driver side access

2015 spark plug replacement on driver side access

How do I access the driver side to replace the spark plugs? ? Do I got to pull this big black cover off as seen in the picture? Can somebody walk me through it? Passenger sides a piece of cake
GLK350
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Old Feb 13, 2020 | 04:23 PM
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2015 GLK350
I read the threads about taking the top off the intake manifold and unplugging the ECM and decided that I would rather pay $570 to the dealer and have it done by someone that does it several times a week. They gave me a free loaner, and cleaned my car too. I replaced the ball joints, tie rod ends, and control arms on my beater truck, replaced the shifting solenoids in the transmission, replaced intake manifold gaskets etc., but it's a 20 yr old beater that isn't worth what I spent on parts. I'm not scared of getting dirty, but I felt fine paying to have the spark plugs changed on my benz.
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Old Feb 13, 2020 | 07:12 PM
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When I did the spark plugs on my 2014 GLK, I relied on the attached document. Yes, it's for a different chassis, but the same M276 engine as the GLK.

Even with the ECU removed, it's still a tight space to work in. But doing it this way you don't have to remove the intake plenum.
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Old Feb 14, 2020 | 07:09 AM
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GLK 350 / Porsche 993
On 276...that pdf above is good, I wish I saw it before doing this on E350.

Disconnect ECU, disconnect vaccum line, use a string/thin rope to grab unto the coil to pull it out like in the PDF document.
You may have to take the intake manifold off (the big plastic thing) to get more access (that's what I did). If you remove manifold be careful with vacuum lines in the back and the runner gaskets.Good luck.
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