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  #1  
Old 10-10-2010, 07:36 PM
LandYaghtLover's Avatar
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Spark plug wire anyone?

I really am not in the mood to buy an entire set. During removal I slipped and cracked the ceramic part under the black rubber. When warmed up I get a bad miss under light load.

So anyone in the upper part of Wisconsin have a wire that is about 2.5 to 3 feet long?

Long shot, I know.

On another note. I replaced my valve cover gaskets. So since I had things apart I decided to pull a plug, then all 8 after I found they were all gapped at 0.045"!! What is up with that! I am not sure if they are even the right Super Bosch plugs!
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1992 750il / 17k miles - project car
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  #2  
Old 10-11-2010, 09:44 AM
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Refer to your Owner's Manual for the proper spark plug and gap.
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  #3  
Old 10-11-2010, 12:14 PM
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Quote:
Originally Posted by LandYaghtLover View Post
I really am not in the mood to buy an entire set. During removal I slipped and cracked the ceramic part under the black rubber. When warmed up I get a bad miss under light load.

So anyone in the upper part of Wisconsin have a wire that is about 2.5 to 3 feet long?

Long shot, I know.

On another note. I replaced my valve cover gaskets. So since I had things apart I decided to pull a plug, then all 8 after I found they were all gapped at 0.045"!! What is up with that! I am not sure if they are even the right Super Bosch plugs!
Whats the number on the side of the spark plug? Chances are probably not right plug.

NGK BP6EFS are for m116/117 engines and can be obtained from local Napa Auto (if you have them) I havent seen them in Advance/AutoZone
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  #4  
Old 10-11-2010, 07:19 PM
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Quote:
Originally Posted by Ferdman View Post
Refer to your Owner's Manual for the proper spark plug and gap.
Thats a funny one. Since the OEM type plugs are not made anymore. Or so I have read.
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  #5  
Old 10-11-2010, 07:21 PM
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Its a Bosh Plus Super Plug. WRD9 something, something. I have to look again. Anyway, for now I bought a plug that I can steal its screw on tip from. Then I am putting in a single small block wire. I think it will help for now until I jusy get a new set of wires. The set now is a Bosch 1 ohm set, copper.
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  #6  
Old 10-11-2010, 09:35 PM
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Quote:
Originally Posted by LandYaghtLover View Post
Its a Bosh Plus Super Plug. WRD9 something, something. I have to look again. Anyway, for now I bought a plug that I can steal its screw on tip from. Then I am putting in a single small block wire. I think it will help for now until I jusy get a new set of wires. The set now is a Bosch 1 ohm set, copper.
R=resistor type plug. Some have had luck and run them anyway, however I think most of us run the proper non-resistor plugs.

You are correct the OEM Bosch non-resistor plugs are not made anymore.

However, the NGK's I've listed are suitable and every bit as good.
There are also some Champions that are a heat number above/below the spec in the manual that are still available.
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82 300SD 145k
82 300SD 265k
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89 420SEL 210k
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  #7  
Old 10-11-2010, 09:58 PM
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Quote:
Originally Posted by JamesDean View Post
R=resistor type plug. Some have had luck and run them anyway, however I think most of us run the proper non-resistor plugs.

You are correct the OEM Bosch non-resistor plugs are not made anymore.

However, the NGK's I've listed are suitable and every bit as good.
There are also some Champions that are a heat number above/below the spec in the manual that are still available.
I read TONS of info now on the proper plugs, gap, etc. The NGK's have a bad rap. Not just in the Benz world, but I have read bad in other forums too. All based on actual experience. With Ford's 4.6l VTech the Bosch is the kiss of death with blow-outs happening often.

As for resistor or not. The factory wires have resistors built-in and resistance is not a huge factor from what I have read. Its probably best to keep it low as possible, but from everything I read going resistor or not is not a big deal. Same for wires.

In the end, as is always the case, copper wires and copper plugs provide the best performance and economy. But copper plugs also require more frequent change intervals.

For now my silicone wire and plug tip cap install are working very well. Amazing how the car feels after dropping down to a 0.032" gap from a 0.045"!!
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  #8  
Old 10-12-2010, 12:22 AM
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Beru

Beru makes both non-r plugs and wires. All to original spec.

Also caps and rotors.

Beru is good.

Stick with non-r plugs.

R
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  #9  
Old 10-12-2010, 11:44 AM
david s poole
 
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if you go buy a set of wires buy BERU or aftermarket with BERU plug ends on them[made by a least one co.in california.]based on personal experience the bosch wires you have now only hold up for about 3yrs so don't blame yourself for the broken one.
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  #10  
Old 10-12-2010, 05:15 PM
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Cool. Thanks for the info. I think I will just look for a new set or wires and plugs. The dist looks newly installed, but I am going to pop it apart anyway.
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  #11  
Old 10-12-2010, 06:01 PM
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It sounds like you probably just need a new plug wire end, which can be obtained seperately. I might have some new, original plugs around for that, would have to check if you're interested.
Gilly
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  #12  
Old 10-12-2010, 08:07 PM
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Ya.. about that. Pretty much hacked the Bosch wire to bit so it could house the new wire. Everything is running great now.

Its amazing how smooth things are now with the right gap!
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1991 560 SEL / 185k miles
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  #13  
Old 10-12-2010, 09:12 PM
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Thumbs up

http://www.kingsbornewires.com/product.sc?productId=338&categoryId=44

Get yourself some real plug wires.

I have these on my E23 BMWs, they are excellent in fit/finish.
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  #14  
Old 10-12-2010, 09:41 PM
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@ $108 they are a good price too.
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  #15  
Old 10-13-2010, 12:00 PM
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Individual wire resistance can be easily measured. I just can't find any difference between resistor and non-resistor style plugs on either of my W126's. Nor do the plug wires seem to make any difference. At least in my personal experience.

Performance is the same, gas mileage is averaging 19+ on the '88 (using regular) and up to 21 highway on the '91 (using mid-grade).

If we could just get rid of that GOTTERDAMMERUNG! methanol crap-o-la gas they are shoving down our throats in the false name & claim of "lower pollution"!!!

Cheers!
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