SPARK PLUGS
MBWorld Fanatic!
Joined: May 2005
Posts: 2,494
Likes: 17
From: REHOBOTH BEACH DE
88-300CE TWIN TURBO, 99-C43, 05-G55K, 71-280SL, 94-E320 CAB, 08 CLK63 BLACK SERIES
Your spark plug wire has a resistance builty into the connector and the combo with a resistor plug can cause poor running.
Send them back and look for NGK BP5EFS or an equivalent Denso or Beru plug.
Non resistors getting difficult to find in the USA.
I buy the NGK's out of the UK because NGK Europe still makes the non resistors.
MBWorld Fanatic!
Joined: May 2005
Posts: 2,494
Likes: 17
From: REHOBOTH BEACH DE
88-300CE TWIN TURBO, 99-C43, 05-G55K, 71-280SL, 94-E320 CAB, 08 CLK63 BLACK SERIES
Last edited by RBYCC; Jan 25, 2009 at 10:49 PM.
Trending Topics
MBWorld Fanatic!
Joined: Dec 2002
Posts: 3,491
Likes: 2
From: Vancouver, BC
Enzo, my Benzo
Everyone in the W124 section looks at the majority of the posts, don't get defensive, especially since we've already answered your questions directly or through older posts in a search. Try it.
MB World Stories
The Best of Mercedes & AMG
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
10 Most Reliable Mercedes-Benz Models You Can Buy Used
Verdad Gallardo
Mercedes Teases Updated EQS With Steer-By-Wire and a Yoke
Verdad Gallardo
8 Mercedes Models With Poor Reliability Records
Verdad Gallardo
Junior Member
Joined: Dec 2005
Posts: 50
Likes: 0
2005 Porsche Cayenne Turbo
Anyone tried the Iridium's?????
Spark Plugs: Premium Class
NGK IX iridium 6341 BKR5EIX .032" $7.83
Spark Plugs: Super Class
NGK GP platinum 7090 BKR5EGP .032" $3.15
Spark Plugs: Regular Class
NGK Traditional spark plug 2460 BKR5ES .032" $2.39
NGK V-power spark plug 7938 BKR5E .032" $2.39
Spark Plugs: Premium Class
NGK IX iridium 6341 BKR5EIX .032" $7.83
Spark Plugs: Super Class
NGK GP platinum 7090 BKR5EGP .032" $3.15
Spark Plugs: Regular Class
NGK Traditional spark plug 2460 BKR5ES .032" $2.39
NGK V-power spark plug 7938 BKR5E .032" $2.39
Junior Member
Joined: Jan 2009
Posts: 34
Likes: 0
W201, W124, W126, . . .
The M103 Engine is quite sensitive to wrong spark plugs. It will run on everyone, but best is the NGK BP6EFS. You don't do well to your car with using any type of iridium, platinium, gold or whatever plugs. Save your money, do good to your enginge and buy yust six BP6EFS for normal fuel and thats all you need.
For LPG, you can use a different one, if you need it, i will look into my list...
For LPG, you can use a different one, if you need it, i will look into my list...
MBWorld Fanatic!
Joined: May 2005
Posts: 2,494
Likes: 17
From: REHOBOTH BEACH DE
88-300CE TWIN TURBO, 99-C43, 05-G55K, 71-280SL, 94-E320 CAB, 08 CLK63 BLACK SERIES
Anyone tried the Iridium's?????
Spark Plugs: Premium Class
NGK IX iridium 6341 BKR5EIX .032" $7.83
Spark Plugs: Super Class
NGK GP platinum 7090 BKR5EGP .032" $3.15
Spark Plugs: Regular Class
NGK Traditional spark plug 2460 BKR5ES .032" $2.39
NGK V-power spark plug 7938 BKR5E .032" $2.39
Spark Plugs: Premium Class
NGK IX iridium 6341 BKR5EIX .032" $7.83
Spark Plugs: Super Class
NGK GP platinum 7090 BKR5EGP .032" $3.15
Spark Plugs: Regular Class
NGK Traditional spark plug 2460 BKR5ES .032" $2.39
NGK V-power spark plug 7938 BKR5E .032" $2.39
The resistance in the plug confilcts with the resistance in the spark plug lead.
Best performance is always with the specified non resistor plug and OEM spec wires.
I've lived with a M103-12V since new almost thirty one years ago and speak from much experience.
Currently with a twin turbo I run NGK BP6EFS and pull 300lbft of torque on a dyno.
Why mess with success and German engineering of the most over engineered vehicle ever built by MB
