e63 Sparkplug upgrade?
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E63 AMG
e63 Sparkplug upgrade?
Other then calling up MB to get stock replacement plugs anyone have any experience or suggestions with the replacement of these?
Anyone know whick ones are used stock? part number?
I need 16 of these right?
Thanks for help!
Anyone know whick ones are used stock? part number?
I need 16 of these right?
Thanks for help!
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E63 AMG
seems neither of them according to their websites makes plugs for my car...oh well.
Just spoke to My dealer and I only need 8, not 16 like the 55's and as usual I will just have to replace with a Bosche OEM plug. Dealer doesnt even carry these. He said he could have them next day for me but none in stock
So they want $18 each for these...
Crazy to think my 2007 already needs new plugs. Even guy at dealer seemed a bit suprised, but all my issues/symptoms seem to point that they might be wearing out. At very low initial loads under throttle you can hear the firing timing a bit slow as if one or more of the plugs are wearing out. until a couple thousand miles ago this never happened. Also idle had become a bit rough. Car drives fine once you get above 2k rpm. Also getting a very mild smell which could be from poor firing of the plugs...not sure if the smell is totally related but gonna find out!
Gonna have them installed tomorrow on my freinds lift. Hopefully this resolves this issue
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From: MARYLAND
14-F Sport, 07-CLS63 2003-HUMMER 2004-Suburban 2008-MAX 2005-YZF R1
I had some plugs put in my Lexus yrs back ... they were called Torque Master they gave my LEX more power then the Denso or NGK. Not sure if they make them for our cars tho!! 
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S600TT, R350
Fr33kn63:
Highly unlikely it is your spark plugs.
Possibly a bad coil. A STAR scan should reveal which cylinder is mis-behaving.
Stock plugs are good for at least 60K if not more.
Good Luck!
Highly unlikely it is your spark plugs.
Possibly a bad coil. A STAR scan should reveal which cylinder is mis-behaving.
Stock plugs are good for at least 60K if not more.
Good Luck!
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E63 AMG
Well I ended up ordering the plugs. I guess its only 8 in this car. And a freind is gonna help me install tomorrow. At this point just want to take that out of the equation.
Anyone know somone with a star diag machine around Northern VA that could hook it up and tell me which which cylinder is misbehaving?
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E63 AMG
I am figuring I am gonna try the plugs since its not TOO much money.
I am also thinking about a retune with my existing mods since I had done my origional tune before my intakes and exhaust work.
There is a group LET tune this weekend in area and am thinking of jumping in on it...thoughts about this ???
would like to find someone with a star diag locally to plug up and figure out if one of my cylinders is messing up.
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04 e55
I would not risk it- you should take it into the dealer for dealer work and ask them to give you an equivalent loner- you don't want the dealer blaming the aftermarket plugs or its installation, etc. Your car is much too pricey and also under warranty for you to be messing around with it. I doubt its a small problem since the dealer could not figure it out. Most of the time- dealer knows best- and worse case scenario- lemon car.
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From: Oklahoma City
2015 AMG C63 S
I could but going to my dealer has proven they have no earthly clue how to diagnose problems other then to keep my car weeks at a time for warranty work when they start fishing. They also just start replacing parts at random and then I have no clue what else they are messing up. I also have renntech ecu tune and dont want them to reflash which I hear might be something thye would do in this scenario.
I am figuring I am gonna try the plugs since its not TOO much money.
I am also thinking about a retune with my existing mods since I had done my origional tune before my intakes and exhaust work.
There is a group LET tune this weekend in area and am thinking of jumping in on it...thoughts about this ???
would like to find someone with a star diag locally to plug up and figure out if one of my cylinders is messing up.
I am figuring I am gonna try the plugs since its not TOO much money.
I am also thinking about a retune with my existing mods since I had done my origional tune before my intakes and exhaust work.
There is a group LET tune this weekend in area and am thinking of jumping in on it...thoughts about this ???
would like to find someone with a star diag locally to plug up and figure out if one of my cylinders is messing up.
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2001 E55
you know, if your car is still under factory warranty --< than 4 years and < 50k miles-spark plugs should be covered. just throwing that out there.
of course they will need to verify a fouled plug before dealer will replace any parts.
of course they will need to verify a fouled plug before dealer will replace any parts.
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E63 AMG
moving forward with this today and gonna have it hooked up to a star diag tool to make sure one of my cylinders aint going bad or having a problem.
If anything new plugs should make it run a little better/smoother.
I appreciate the feedback from all, but dealer doesnt always know best and can prove it with EVERY issue I have had in the last 2 years of ownership. Time to do some stuff on my own since I am modded. The plugs are being swapped out with factory OEM plugs so wont mess up any warranty.
I will update this tonight....
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E63 AMG
ok so had to delay a day in writing this up. Guy helping me do this coudlnt meet up yesterday so he pushed it off til today. Anyway the jury is still out if the noise I have been hearing is totally gone, but my ride home was quiet and without adverse noise.
As far as the spark plugs go....
My car is at 23500 miles. The spark plugs looked like A$$!!! I am gonna try to take a couple pics later and post what they looked like but every other spark plugs gap was off. My gap ranged from .0036-.0042 which I guess in terms of gap is pretty bad. Some cylinders firing hotter then others. NOT GOOD! These plugs are VERY warn. After everything i have been hearing from people I never expected them to look this bad.
The stock plugs as I ordered fromt he dealer for replacement all gapped at .0042 exactly.
Recommendation to 63 engine folk: If you are in the mid 20k miles range and havent had a set of plugs swapped out on your car either do it yourself or go to dealer and ask them to replace under warranty(if possible).
After replacing my plugs I now feel my car is 5-10% stronger at lower rpm's. There is a VERY noticable difference in engine idling feel and under load. Much stronger feel. just my .02
I will update with pictures this evening.
As far as the spark plugs go....
My car is at 23500 miles. The spark plugs looked like A$$!!! I am gonna try to take a couple pics later and post what they looked like but every other spark plugs gap was off. My gap ranged from .0036-.0042 which I guess in terms of gap is pretty bad. Some cylinders firing hotter then others. NOT GOOD! These plugs are VERY warn. After everything i have been hearing from people I never expected them to look this bad.
The stock plugs as I ordered fromt he dealer for replacement all gapped at .0042 exactly.
Recommendation to 63 engine folk: If you are in the mid 20k miles range and havent had a set of plugs swapped out on your car either do it yourself or go to dealer and ask them to replace under warranty(if possible).
After replacing my plugs I now feel my car is 5-10% stronger at lower rpm's. There is a VERY noticable difference in engine idling feel and under load. Much stronger feel. just my .02
I will update with pictures this evening.
Last edited by Fr33kn63; Oct 2, 2008 at 04:17 PM.
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From: Orange County, CA
GMC - Miata - Trek - P-Car
Unusual reach configuration on the '63 plugs. Where you able to source aftermarket pieces?
Their coloration looks to be a little dark, but that could be due to extended idling or an engine that wasn’t fully warmed up and/or run on the highway before swapping them out. Surprising amount of deposits evident. Is it consuming any oil?
Perhaps it simply needs to spend more time in its element - at WOT.
Their coloration looks to be a little dark, but that could be due to extended idling or an engine that wasn’t fully warmed up and/or run on the highway before swapping them out. Surprising amount of deposits evident. Is it consuming any oil?
Perhaps it simply needs to spend more time in its element - at WOT.
Thread Starter
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E63 AMG
Unusual reach configuration on the '63 plugs. Where you able to source aftermarket pieces?
Their coloration looks to be a little dark, but that could be due to extended idling or an engine that wasn’t fully warmed up and/or run on the highway before swapping them out. Surprising amount of deposits evident. Is it consuming any oil?
Perhaps it simply needs to spend more time in its element - at WOT.
Their coloration looks to be a little dark, but that could be due to extended idling or an engine that wasn’t fully warmed up and/or run on the highway before swapping them out. Surprising amount of deposits evident. Is it consuming any oil?
Perhaps it simply needs to spend more time in its element - at WOT.
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From: California, USA
E63 P30, CL500 Sport
Car is driven on hwy daily. And was driven more then 45 min on hwy before swap out. Engine has never had a consumption problem with oil. No couldnt find anything aftermarket so just got a fresh set from dealer and gapped them all to same specs. Car is running much stronger now then before. I tend to go WOT fairly often.
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From: S.D Cali
CLS63
Could New plugs make it stronger? Could the gap have been set wrong? They come preset.
Sure we can wait 10k miles for an oil change but I always change at 3k the newer the oil the better
Maybe some one should DYNO before & after new plugs.
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From: Washington D.C. area
16 GLE400 4matic
I had almost the same issues. MB found out 1 of my cylnd was missfiring so they ended up replacing the plugs. Till now the vehicle shakes a bit when normal ideling on start up. I had them check the coil packs they told me it's fine. Now I'm out of warrenty. Now I'm thinking to dump seafoam or do that BG thing
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E63 AMG
My recent Dyno sheets under the 63 thread are from about 2 weeks ago with the bad plugs. might go back to the Dyno this week and rerun it on the machine to see if there is any difference in numbers. Gotta see how busy my week is. The following monday I am going to MIR to do some runs.
Car definetly feels a lot stronger in the first 4-5k rpms with the new plugs.
