Spark Plug Replacement - M271
04-03-2009, 07:02 PM
#2
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W124, W203, W204, W251
It's super-easy!
Pop the cover off....loose the bolts that hold the direct-coil.....unplug the coil....pull them out.....put spark-plug socket in there and turn it counter-clockwise....That's it
Pop the cover off....loose the bolts that hold the direct-coil.....unplug the coil....pull them out.....put spark-plug socket in there and turn it counter-clockwise....That's it
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04-05-2009, 11:59 AM
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04 C230K SS 6Spd Manual
04-05-2009, 02:54 PM
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^^^I always get parts from rmeuropean.com.....OEM Bosch is only $9.86/each
M271 has a very unique plug, so make sure you get Bosch FR-6-MPP-332......DO NOT get something else(eg Platinum, Fusion, Bosch+4, E3, etc.) Otherwise, you'll trash the engine!
M271 has a very unique plug, so make sure you get Bosch FR-6-MPP-332......DO NOT get something else(eg Platinum, Fusion, Bosch+4, E3, etc.) Otherwise, you'll trash the engine!
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alejoswp (05-09-2022)
04-05-2009, 03:15 PM
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04 C230K SS 6Spd Manual
Thanks a lot.
04-05-2009, 03:23 PM
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05 c230 kompressor
i need to change mine out too. so this is the one to get. 05 c230 komp. auto?
04-05-2009, 07:26 PM
#16
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Yep! & the plugs have a very unique length - don't mess with these things - Benz know what is right for their engines.
04-09-2009, 09:38 PM
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What's the change interval for our spark plugs? I read it was 60k miles. Planning to get the Bosch.
Guys what about my CLK W209 ?? am i gona use the same plugs or what??
Thanks,
Andy
Thanks,
Andy
If I remember it correctly, M112 has twin-spark.....so you need 12 plugs total.
Bosch FR-8-DPP-33 is the one you need.
just bought NGK Laser Iridium. other threads recommended this. is it ok? havent installed it yet. is it safe?
04-09-2009, 10:49 PM
#21
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I just changed my spark plugs this afternoon with the Bosch OEM type. I have a little over 58000 miles on them.
The plugs I pulled still looked pretty descent; the #3 and #4 plugs were dry and had just black and the center was a normal tan color. The #1 and #2 plugs had some oil on it and when I looked way down into the spark plug hole, I could see that the piston tops had oil on it. When I pulled off the coils for the #1 and #2 there was a little oil in the coil tubes as well, so I may have a leaking valve cover gasket. Hopefully nothing worse.
I will pull the plugs again in about 5000 miles to see how they are running.
The plug remove and replace took a total of 45 minutes with a break.
The plugs I pulled still looked pretty descent; the #3 and #4 plugs were dry and had just black and the center was a normal tan color. The #1 and #2 plugs had some oil on it and when I looked way down into the spark plug hole, I could see that the piston tops had oil on it. When I pulled off the coils for the #1 and #2 there was a little oil in the coil tubes as well, so I may have a leaking valve cover gasket. Hopefully nothing worse.
I will pull the plugs again in about 5000 miles to see how they are running.
The plug remove and replace took a total of 45 minutes with a break.
04-10-2009, 01:05 AM
#23
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The #1 and #2 plugs had some oil on it and when I looked way down into the spark plug hole, I could see that the piston tops had oil on it. When I pulled off the coils for the #1 and #2 there was a little oil in the coil tubes as well, so I may have a leaking valve cover gasket. Hopefully nothing worse.
