Hello All, I need a knowlege transfer concerning the spark plugs in my E 320, V6. Two things this engine has 12 plugs. I bought Bosche 4 pole platinum plugs from Auto Zone, they gave me 6, but now I look at the engine and it has 2 per cyl. please confirm. Also I have tried to pull the leads off of the plugs and they will not come loose. I don't want to break the old plugs off in the block. Is there a catrch release I can not see? The plugs are buried on both heads. The leads from the coils go a long way down the heads.
Please help, has any one done these before, I need advice before I break something.

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Ddanbfly

2001 E320 51k
Use A Small Pliers To Turn The Metal Part And A 17mm Open End To Go Outside The Metal Part And Long 3/8 Entension 12 In Or More Inside The 17 Mm Close Wrench Do No 1 Wire First Left Forward And
Use The Valve Cover To Pry May Be You Will Bend Your 17 Mm Tool Or It Will Pop Off The Spark Plug, Use A Long Spark Plug Socket And A 19mm Socket Top Of Socket And 1/2 Racket Wrench To Remove Plug, Install 12 New Plugs Use A Anti Seize Lube On Plugs And Dielectric Tune Up Grease For Outside Of The Plug Do A Search E320 Spark Plugs, The Wires Are $11.00 Ea, USE ONLY THE LONG 5 IN ONES METAL OUTER SHELL AND HAVE A BUMP ON THE END, FOR THE WIRE FOR THE 17 MM OPEN WRENCH TO HOLD TO PRY ON, Plugs Are $5.00 Ea, Have Good Power And Fuel Mileage Like A New Mercedes Its The Spring In The Wire Connection, JCWHITNEY.COM HAVE LONG 5 IN SOCKET ON SALE $9.49 NO 2X134663W USE 3/8 PUSH ON RACKET ON TOP OR
19 MM OUTSIDE TOP

take those plugs back to autozone!! get the correct bosch platinum ones i have seen to many +4 cause misfire, to remove the ends use an openend 17mm wrench, be careful as the ends are around $45.00 each

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1967 250 S
1967 280SE
1968 250S
1971 280 SE
1973 220
1974 280 S
1975 450 SEL
1976 220 D
1979 300SD
1983 300 SD
1985 230 TE euro
1986 280SL
1986 500 SEL euro
1986 190E 2.3
1990 300 SE
2003 C230 K
2004 C230 K
1987 560SEL
1987 300SDL now in canada
2005 C230
1998 C43 AMG Sold to DON
1993 190E 2.6
300TD Former daily driver Totaled
current:
R320 CDI
Ram 2500 Cummins

Also, don't know how much room there is to work around the V6, but on the V8, its a lot easier if you remove the ignition coils as well. You'll have a lot more room to work with.

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Ali Al-Chalabi

2001 CLK55
1999 Dodge Ram 2500 Cummins Diesel
2002 Harley-Davidson Fatboy
Merlin Extralight w/ Campy Record

hello,
I had the same problem as you with my CLK 430 but I have 16 plugs......
I just can tell you that I had BOSCH platinum F8DPP332 and I replaced them With NGK IFR5D10 the same for your engine.
Thise plugs are Ok and engine run perfectly.
I used a 17 mm open wremch also to remove boots.
Take your time to remnove the old one..........4h for me to chenge 16 plugs...
I hope will help you
Alberto

$5 per plug... anywhere to get 'em CHEAPER? i'm due (98K), but $60 for spark plugs HURT! (the best online price i found was $4.4*)...

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00 w210t, all stock.

for something that is every 5 years or 100k miles, just get what it calls for, it isn't like the old days where you did it every 15k, i am so pro the originals, because i have seen to many cars in for rough running and misfires due to the wrong plugs installed where someone was trying to save a buck

__________________
1967 250 S
1967 280SE
1968 250S
1971 280 SE
1973 220
1974 280 S
1975 450 SEL
1976 220 D
1979 300SD
1983 300 SD
1985 230 TE euro
1986 280SL
1986 500 SEL euro
1986 190E 2.3
1990 300 SE
2003 C230 K
2004 C230 K
1987 560SEL
1987 300SDL now in canada
2005 C230
1998 C43 AMG Sold to DON
1993 190E 2.6
300TD Former daily driver Totaled
current:
R320 CDI
Ram 2500 Cummins

A decent pair of plug wire pliers work for pulling the plug ends too. They have angled, padded jaws for gripping. Try rotating the plug end a little bit to break the seal. As stated earlier, removing the coil packs makes for a bit more working room.

It's equally important to get the plug ends seated when reinstalling. Takes a good push, you need to hear a solid snap as it locks into place. Oh, and each plug connects to a specific port on each coil pack. They are labeled "A" & "B" (I think...been a while) on the coil packs and each cylinder. Each plug is fired at a different time, so if you get them backwards the engine might run in an interesting manner...

'Bout 90 minutes on a 6 cylinder 210 for a decent DIYer.

- JimY