Bosch spark plugs aren't ideal
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From: Sugar Land, TX
BMW E39
Bosch spark plugs aren't ideal
Mercedes needs to do more research. Stock plugs burn a tad too hot. This is why many people report good things about switching to Iridium plugs, specifically the Denso IK16, which is colder.
At 30,000 miles. I'm going Denso IK16 soon, and would advise everyone else to do so when changing their plugs.
At 30,000 miles. I'm going Denso IK16 soon, and would advise everyone else to do so when changing their plugs.
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From: Sugar Land, TX
BMW E39
Originally Posted by schwarz
newton22, is it possible to change the spark plugs by yourself instead of bringing the car to the dealership?
Regardless, I'm pretty sure Mercedes engine dynos these motors with the Bosch plugs. So its perfectly possible for our engines to recover and GAIN power from using other plugs.
By the way schwarz, your S has a great stance! And its weird how our sig pics both depict the car at the same angle.
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From: Western Australia
124, 140, 211, 220, 221, 996
i think i might have to tinker with my car a little bit to do it myself then. hehe.
about the sig, thanks for your comment. and i've seen your sig but when i put mine on i just realised how much it look like yours. :p let me know if you mind so i can change it.
about the sig, thanks for your comment. and i've seen your sig but when i put mine on i just realised how much it look like yours. :p let me know if you mind so i can change it.
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From: Germany
'00 S320 W220, '98 A160 W168/ sold in 2005 '86 260 E W124 '90 260E W124
@Newton 22
is the picture really showing a W220 spark plug??? Mine look completely different. I have the Platnium plugs, which are required for this engine, and they looked still quiet ok, when I changed them after 50,000 mls.
is the picture really showing a W220 spark plug??? Mine look completely different. I have the Platnium plugs, which are required for this engine, and they looked still quiet ok, when I changed them after 50,000 mls.
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Your spark plug actually looks quite good with a normal operating result. The burn pattern and operating tempurature are normal, with very little electrode erosion.
Attached are untouched photos of spark plugs that are subjected to too much heat.
Attached are untouched photos of spark plugs that are subjected to too much heat.
Originally Posted by newton22
Mercedes needs to do more research. Stock plugs burn a tad too hot. This is why many people report good things about switching to Iridium plugs, specifically the Denso IK16, which is colder.
At 30,000 miles. I'm going Denso IK16 soon, and would advise everyone else to do so when changing their plugs.
At 30,000 miles. I'm going Denso IK16 soon, and would advise everyone else to do so when changing their plugs.
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From: Sugar Land, TX
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Originally Posted by kjb55
Your spark plug actually looks quite good with a normal operating result. The burn pattern and operating tempurature are normal, with very little electrode erosion.
Attached are untouched photos of spark plugs that are subjected to too much heat.
Attached are untouched photos of spark plugs that are subjected to too much heat.
Originally Posted by bamberger_1
@Newton 22
is the picture really showing a W220 spark plug??? Mine look completely different. I have the Platnium plugs, which are required for this engine, and they looked still quiet ok, when I changed them after 50,000 mls.
is the picture really showing a W220 spark plug??? Mine look completely different. I have the Platnium plugs, which are required for this engine, and they looked still quiet ok, when I changed them after 50,000 mls.
Originally Posted by schwarz
:p let me know if you mind so i can change it.
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W220 S65 AMG
I just bought 16 IK16 Spark Plugs for $140.00 including shipping. 
Here is a diagram for those of you who want to know how to pull yours you.
What if I don't have a torque wrench... is it a big deal?
Here is a diagram for those of you who want to know how to pull yours you.
What if I don't have a torque wrench... is it a big deal?
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Originally Posted by newton22
Mercedes needs to do more research. Stock plugs burn a tad too hot. This is why many people report good things about switching to Iridium plugs, specifically the Denso IK16, which is colder.
At 30,000 miles. I'm going Denso IK16 soon, and would advise everyone else to do so when changing their plugs.
At 30,000 miles. I'm going Denso IK16 soon, and would advise everyone else to do so when changing their plugs.
Those plugs are not indicating hot at all for UNLEADED fuel.
In fact, it looks as though you just shut the car off , as opposed to doing a proper plug chop.
Last edited by PA55AMG; Jun 19, 2006 at 02:50 PM.
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From: Sugar Land, TX
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Originally Posted by Oxygen
I just bought 16 IK16 Spark Plugs for $140.00 including shipping.
Here is a diagram for those of you who want to know how to pull yours you.
What if I don't have a torque wrench... is it a big deal?
Here is a diagram for those of you who want to know how to pull yours you.
What if I don't have a torque wrench... is it a big deal?
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Originally Posted by Oxygen
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Thanks.....
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I'm not a fan of one plug over the other.. But, I will say that there could be a million reason why spark plugs look certain ways.
1. fuel quality
2. mixture control
3. driving characteristics
4. Engine...
these are a few but how can you say the plug you show in the pic is hot?
by what degree or percentage for that engine setup?
I'd say that if a plug is designed to go 100K between changes and you need to change them at 30K you should investigate possible engine anomolies.
there are a lot of factors besides the maker of a plug that determine what is "optimal" for an engines performance.
Saying that is just like saying that all you need to do to get more Hp is to add a certain type of air filter and you are all of a sudden in the high performance catagory...
You must consider all of the factors involved..
Normally in the Aviation world ( where I'm from ) in the land of zero tolerance high performance engines, the spark plug is examined because it reveals tell tell signs of what is going on internally with the engine so you know what needs to be addressed. Not to be misconstrued as " well look at these things, I think its time to find a new brand of plug ".
1. fuel quality
2. mixture control
3. driving characteristics
4. Engine...
these are a few but how can you say the plug you show in the pic is hot?
by what degree or percentage for that engine setup?
I'd say that if a plug is designed to go 100K between changes and you need to change them at 30K you should investigate possible engine anomolies.
there are a lot of factors besides the maker of a plug that determine what is "optimal" for an engines performance.
Saying that is just like saying that all you need to do to get more Hp is to add a certain type of air filter and you are all of a sudden in the high performance catagory...
You must consider all of the factors involved..
Normally in the Aviation world ( where I'm from ) in the land of zero tolerance high performance engines, the spark plug is examined because it reveals tell tell signs of what is going on internally with the engine so you know what needs to be addressed. Not to be misconstrued as " well look at these things, I think its time to find a new brand of plug ".
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S600 with Nitrous Express Can't go over 130 miles
I need Help, how I can take out the electronic speed limit?
I changed for Copper ACCEL because the Nitrous system, and becarefull on coil pack removal the tubes can split and wont going back easy
I changed for Copper ACCEL because the Nitrous system, and becarefull on coil pack removal the tubes can split and wont going back easy
Last edited by MBVzla; Sep 13, 2007 at 07:21 PM.
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I used the Denso's, they're great!!! See my post, it's a two hour DIY job, see #8 on this post LINK
!!I used Bosch 7422's. My old plugs looked pretty good actually. Mileage is 86K.
Took about 4.5 hours taking my time. Snapped one 3/8" drive universal joint half-way through, then switched to 1/2" drive(should have went 1/2"drive from get-go). Did it without removing coil packs
!!
.I can tell a difference just in the idle, it is better. Acceleration is nicer as well.
Thanks!
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Corrolla
This link worked for me!!
I used Bosch 7422's. My old plugs looked pretty good actually. Mileage is 86K.
Took about 4.5 hours taking my time. Snapped one 3/8" drive universal joint half-way through, then switched to 1/2" drive(should have went 1/2"drive from get-go). Did it without removing coil packs!!.
I can tell a difference just in the idle, it is better. Acceleration is nicer as well.
Thanks!
!!I used Bosch 7422's. My old plugs looked pretty good actually. Mileage is 86K.
Took about 4.5 hours taking my time. Snapped one 3/8" drive universal joint half-way through, then switched to 1/2" drive(should have went 1/2"drive from get-go). Did it without removing coil packs
!!.I can tell a difference just in the idle, it is better. Acceleration is nicer as well.
Thanks!
Andy
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04 S430 (sold),05 X5 4.4i, 02 325i, 87 560SL, 85 Alfa Romeo
There is no law that say's the coil packs MUST be removed. In my case they were only unbolted and rolled out of the way to make removing the plug wires easier. BUT if you can manage to work the plug wire loose and be able to snap it back into place when you install the new plugs, there is no real reason to remove the coil packs.
I can't believe someone dug up a 3 1/2 year old thread to talk about plugs.. why not just make a new post??
I can't believe someone dug up a 3 1/2 year old thread to talk about plugs.. why not just make a new post??
Last edited by my06clk; Feb 10, 2010 at 12:25 AM.
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From: CA
'93 Porsche 964 C2 Coupe(DD), '16 Audi A6 S-Line (wife's DD)
There is no law that say's the coil packs MUST be removed. In my case they were only unbolted and rolled out of the way to make removing the plug wires easier. BUT if you can manage to work the plug wire loose and be able to snap it back into place when you install the new plugs, there is no real reason to remove the coil packs.
I can't believe someone dug up a 3 1/2 year old thread to talk about plugs.. why not just make a new post??
I can't believe someone dug up a 3 1/2 year old thread to talk about plugs.. why not just make a new post??
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04 S430 (sold),05 X5 4.4i, 02 325i, 87 560SL, 85 Alfa Romeo
Sometimes it just makes sense at some point to make fresh thread focused on the subject at hand. Search still works in that case also.
