XJ6 & XJ12 Series I, II & III 1968-1992

Anyone tell me what this is?

 
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Old 09-19-2014, 05:21 PM
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Default Anyone tell me what this is?

Hi all, American specs Series 1 (1971) and, I think, mostly stock. Any other owners got a flimsy black plastic thing running beside the plugs on their engine? Hope the picture is clear enough.

It doesn't seemingly do anything or is that a problem: Ought it do something?
 
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Old 09-19-2014, 06:22 PM
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I'm guessing that what you're seeing was, 40 years ago, a full length sheath for all six plug wires.

Cheers
DD
 
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Old 09-19-2014, 06:57 PM
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X2

Randy
 
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Old 09-19-2014, 07:07 PM
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OK, yes, that makes sense. I'll leave it for the sake of "age' then, maybe.

Thanks, I honestly had no idea.
 
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Old 09-20-2014, 01:50 AM
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yes, it is there to protect the spark plug wires from heat. All Jaguar cars had them. Eventually they dry out and start breaking apart. Made of cardboard. The old Service Manuals call it a "loom".
 
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Old 09-20-2014, 08:19 AM
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Caveat:


Old Ford V8's and some Chrysler products used them. But in metal. Cross fire issues as the old cloth covered spark plug wires detiorated. The very devil to replace wires in the right order. And, some say cross fire issues merely by having parallel wires, best to 'tangle" them a bit.


But,as long as wires are healthy probably mostly OK.
 
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Old 09-21-2014, 11:39 AM
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Thanks, all. All the wires are nicely cased in plastic so doubt there's a need for it now. Car is a driver but if I ever tried to graduate her to show I'd use it.
 
 

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