Author Topic: Screw on spark plug wires  (Read 6076 times)

rjfurlan

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Screw on spark plug wires
« on: August 04, 2015, 17:59:56 »
Hey, I bought some new sparke plug wires for my 67 250sl and I can not figure out how to get them throught the sleeve. How do you unscrew these wires? Also how many wire go through the sleeve?

Thanks
Rich

66andBlue

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Re: Screw on spark plug wires
« Reply #1 on: August 04, 2015, 22:10:57 »
The connectors should have a wood screw at the end that screws into the copper wire. Just turn the connector and unscrew.
Alfred
1964 230SL manual 4-speed 568H signal red
1966 230SL automatic 334G light blue (sold)
1968 280SL automatic (now 904G midnight blue)

Naj ✝︎

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Re: Screw on spark plug wires
« Reply #2 on: August 05, 2015, 08:53:22 »
If your wire set is meant for a later model without the sleeve, then the wires will to too short for use with the sleeve.
No need to tell you how I know this  ::)
naj
68 280SL

rjfurlan

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Re: Screw on spark plug wires
« Reply #3 on: August 05, 2015, 17:11:00 »
66andBlue, thanks, I was scared to just start twisting wires. Got it to work.

Naj, they fit. When I purched the car mine had a sleeve on it that went under the injector lines.

I took it out for a test drive and I swear it runs better. I am waiting on new plugs. i have w7dc in them now but ordered ngk bp5es as suggested on this fourm.

I also found out my gas guage (sender) does not work.

Rich
« Last Edit: August 06, 2015, 00:15:28 by rjfurlan »

ja17

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Re: Screw on spark plug wires
« Reply #4 on: August 06, 2015, 12:41:45 »
I use a little di-electric grease on the new rubber boots and wire ends so they screw together easily.  You should have six straight spark plug connectors in your set. Some replacement sets use five straight connectors and one right angle connector. The right angle connector is used on carbureted car engines and is incorrect for the W113 injected engines. Also you are probably aware that the wires can be trimmed to correct size since the connectors are removable.
Joe Alexander
Blacklick, Ohio
1969 Dark Olive 280SL
2002 ML55 AMG (tow vehicle)
2002 SLK32 AMG (350 hp)
1982 300TD Wagon turbo 4spd.
1963 404 Mercedes Unimog (Swedish Army)
1989 flu419 Mercedes Unimog (US Army)
1998 E430
1974 450SLC Rally
1965 220SE Finback

Benz Dr.

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Re: Screw on spark plug wires
« Reply #5 on: August 06, 2015, 15:54:30 »
Also, check to see if the coil wire is carbon core - they often are. Change it to solid wire if it is. I re-use the terminal ends from the carbon coil wire.
1966 230SL 5 speed, LSD, header pipes, 300SE distributor, ported, polished and balanced, AKA  ''The Red Rocket ''
Dan Caron's SL Barn

1970  3.5 Coupe
1961  190SL
1985   300CD  Turbo Coupe
1981  300SD
2013  GMC  Sierra
1965  230SL
1967 250SL
1970 280SL
1988 560SEC