W211 AMG Discuss the W211 AMG's such as the E55 and the E63
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Spark Plug Comparison

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Old 05-26-2019, 09:54 PM
  #51  
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2003 Mercedes E55 AMG
Originally Posted by PieRat
My daily commute is like 1.5 miles (5min in traffick) from home to work and back. I don't really get all the way up to op temp and I think this contributes to my plugs fouling a little. The idle for me really smooths up when I've been beating on it, until then its a bit rough. It could be my injectors though? I am putting a new set of 1 step colders in. I have one bank done last night the other bank today and I'll let you guys know if its smoother from the change. Everything else, MAP, IAT, o2, coil packs and wires are all replaced within the last couple of years. My thought is if you are on stock you will have problems with plugs fouling up and slightly rougher idle. NGK recommend going to one sop colder when increasing power by 75-150 hp if I remember correctly.

You must be fast to get all 16 plugs done in an hour! I spent a good hour getting one side done, but I didn't copper grease the plugs last time so I have to turn it like 7 times before it starts loosening up and turning easily :P. Also I don't have a good extension length and have to work around with too short and too long .
Yeah it takes me only an hr but i have all the tools needed to do quickly so idk maybe thats why. And i could see that causing a prob u do need to get the car up to temp that can cause lots of problems. But try lettin it warm up a few mins before u drive to work shouldnt have any more issues
Old 05-26-2019, 11:44 PM
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tw2
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2005 E55 AMG, 1991 MR2
Does anyone have an opinion on laser vs normal iridium?
Old 05-27-2019, 12:48 AM
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Originally Posted by PieRat
Probably should put some copper Q1qQQwzQqqqqqwww²grea222w3w33a2qq in grease on.
Is this a special grease lmao 🤣🤣
Old 05-27-2019, 02:07 AM
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Originally Posted by tw2
Does anyone have an opinion on laser vs normal iridium?
Good question.

https://www.toyotanation.com/forum/1...iridium-s.html

https://www.bobistheoilguy.com/forum...s_Laser_Iridiu

Last edited by Fountain35; 05-27-2019 at 02:11 AM.
Old 05-27-2019, 02:21 AM
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CLS55
Just changed my 7s to another set of 7s. 40k km and 4 years the idle was fu*kd back to silky smooth yeah baby. Kinda feel like the plugs didn't last long as they should. Ah well looks like I'll replace them every 2 year
Old 05-28-2019, 05:06 AM
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https://www.sparkplugs.com/product.aspx?zpid=9871

https://www.sparkplugs.com/product.aspx?zpid=9806
Old 05-28-2019, 05:34 AM
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2005 E55 AMG, 1991 MR2
I have always used the laser's on these cars, the main reason is that changing them is a PITA and I don't want to do it again.
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