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1999 E320, 2000 E320, 2003 E320 Wagon, 2005 C230K SS, 2010 Accord LX w Eibach & Koni FSD's
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2,900 Posts
Discussion Starter #1 (Edited)
Well......I'm going to stop procrastinating and pull my sparkplugs before the treads seize. My 2005 C230K SS is seven years old and has 19,000 miles. Question is....... would you replace the plugs or would you just apply anti-seize and reinstall the old ones?
 

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2010 C200 CGI /W203/SLK230/W202/230E/280SE
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3,301 Posts
I noticed when I changed mine that the handbook recommends "or 4 yrs". Cannot quite understand why.

If they are stiff to remove, try 1/4 turn and reverse a bit and so on until free. Small squirt of CRC would help.

Oberoi
 

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W203 kompressor Estate Avant Garde. 2004
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55 Posts
Always go for new plugs, about the cheapest parts for you merc.... Why bother ?
 

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1999 E320, 2000 E320, 2003 E320 Wagon, 2005 C230K SS, 2010 Accord LX w Eibach & Koni FSD's
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2,900 Posts
Discussion Starter #4
Finally did it. #1 plug was a little stiff. Did what Oberoi suggested and it came out without incident. Pretty much a straight forward job that took about 30 minutes. Bought new plugs because they have crush washers on them, if they didn't I wouldn't of hesitated to reuse the old ones because they looked quite good with only 19,000 miles on them.

Couldn't find OEM Bosch FGMPP332. Used FRGMPP332 instead. Does the "R" mean its a resistor type and the OEM isn't? Don't know if its my imagination, but the car doesn't seems to run silky smooth as before.
 

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1999 E320, 2000 E320, 2003 E320 Wagon, 2005 C230K SS, 2010 Accord LX w Eibach & Koni FSD's
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2,900 Posts
Discussion Starter #5
Always go for new plugs, about the cheapest parts for you merc.... Why bother ?

Well.......if you have more than one Merc, those cheap parts don't nickle & dime you to death..... they fifty & hundred you to death :mad: (yes, a set of plugs do cost about $50)
 

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W203 kompressor Estate Avant Garde. 2004
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55 Posts
plugs versus costs

I have a 911 with 12 plugs so I know all about no nickle and dime stuff ;)
luckily the W203 has only 4... that keeps me in the dime region !
 

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W203 kompressor Estate Avant Garde. 2004
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55 Posts
Finally did it. #1 plug was a little stiff. Did what Oberoi suggested and it came out without incident. Pretty much a straight forward job that took about 30 minutes. Bought new plugs because they have crush washers on them, if they didn't I wouldn't of hesitated to reuse the old ones because they looked quite good with only 19,000 miles on them.

Couldn't find OEM Bosch FGMPP332. Used FRGMPP332 instead. Does the "R" mean its a resistor type and the OEM isn't? Don't know if its my imagination, but the car doesn't seems to run silky smooth as before.
I think that the R stands for resistor, I use F6MPP332.... like to know what are the best plugs for the Kompressor engine (180C or 200C)
 

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Coupe/Convertible Forums Moderator
CURRENT: 2011 SL550, 2011 C300 FORMER: ML350, CLK550 Cabriolet, C240, ML320, 300TD
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19,447 Posts
The M112 V6 and M113 V8 engines have two plugs per cylinder, so it cost about $80 for the 12 plugs in my C240.
 

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Coupe/Convertible Forums Moderator
CURRENT: 2011 SL550, 2011 C300 FORMER: ML350, CLK550 Cabriolet, C240, ML320, 300TD
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19,447 Posts
I believe it's either a 20 or 25. If you don't have a set, go ahead and buy a good one - you'll need it. I recommend sockets over "screwdriver" style, and get the mid-length (inch-long shaft). The short ones (1/4 inch shaft) won't reach the head below the coil pack surface.
 
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