Slow Guy

I suspect mileage has only a small impact on the need for wire replacement, age would have a bigger impact along with the climate the car is driven. Just a guess but I bet in a hot/dry climate they would have a shorter lifespan. Just my .02

mike cap

Matt,

My plug wires are like new at 37,000 miles. But the car has always been in the cooler NE climate and not subjected to rain, snow or salt. I would be certain that your plug wires are fine. Any 'cracking' you may see is the cosmoline that Porsche sprayed everywhere underneath the car and oversprayed on the plug wires.

chris walrod

The most frequent killer of wires is oil and particularly the lowers. When (not if) your lower v/c's leak, typically oil soaks into and degrades the wire insulation. Many times we've seen lower wires that have fallen-apart.

So, fix those v/c cover leaks!!

e9stibi

I can confirm this from recent experience. I would just inspect them and change as required.

cgfen

28K

#3 exhaust wire was rotted with chunks of insulation falling off.

no performance difference noted

i reused the connectors at both ends, all wires except #3 exhaust looked great.

I'd consider this a do it if you have to thing, not just to have a good time scraping your knuckles

good luck

Craig

mani993

ok

kjr914

The first site points you to the 2nd...
http://kingsborne.com/
http://www.beruparts.com/

In addition to the above, for wires, there are a couple of individuals that have made sets, if you are looking to save money/resuse boots, only for a few wires or a bit of engine bay bling/color:
Mark Robinson
Alex (IXLR8)

jg291446

On my side I don't know about the mileage but maybe it was the original. At Lear, they had not been changed since 8 years and they wore in a really bad shape. The wire were cracked and there was sparkles everywhere. The car was not running that bad, but know I see a big difference.

TJ993

Anyone have an accurate sketch of The Usual Suspects - the usual Failing wires?
I had # 6 Replaced at 88,000.

If I read here correctly # 5 is next??
Now my car has 122,857 Miles.

Perhaps it is time to change all of the wires? Thoughts?
My car on damp days sound like an Old Chevy. Suggestions welcomed.

I love how people post here sayin this is easy and it takes an hour - well sometimes true, but I am not overly mechanical and I find yah its an hour job if your mechanically inclined and you have done the job twice before...just my observation

Kika

I changed all of mine around 90k. The lowers on 5 and 6 looked the worst. I perhaps could have gotten by with reusing the connectors and doing the wires only, but I got a good deal on a set from a rennlister that converted his car to coils.

The likelihood that all 12 are bad is small, but on the other hand, do you want to chase down each one as they go bad? Personally, I opted to change all of them, realizing that I was probably changing 10 of them that were good.

Ocean Blue C2S

FYI

I just got a quote from a Porsche dealership in a tax-free state for the cost of Spark Plug wires, they said that it was not sold as a set but sold as individual wires at $ 77.58 each, so $ 930,96 to have those replaced. I thought that it was sold as a set as advertised by Pelican.

The Coil Wires, as quoted by this tax-free state dealership were $ 37.89 each, thus $ 75.78 for two, plus whatever cost, like shipping and for me it would be more cost to bring them into Canada.

What did Vertex charge TargaGR??????????

Cheers,

Bert

TJ993

Hi KiKA;
The likelihood that all 12 are bad is small, but on the other hand, do you want to chase down each one as they go bad?

My thoughts exactly. Why do 1 since u r in there anyway!

So I went down to the local dealer and asked the same question. The pricing here is Phenominal. Actual by dealer price we r talkin like $700. plus 13% Taxes CDN for complete set of wires = $800. then add cost of install.OUCH !

Parts fellow seems like a good guy, thankfully, but said this:
We usually do not do plug wire replacements till after 150,000 so we only do one at a time. Guess that makes sense.

But considering price I am being quoted in T.O> (slang for Toronto) and what is being charged here for Labour - Based on service providers existing in a seasonal driving climate I figured I might just want to give this a try as a DIY.

Found a set on ebay for $418. That helps.

Still like to try the ohms test on the wires themselves, no idea how?? Ideas ?
Friend of mune says its likely a coil gone bad.

What is a realistic DIY Time for full replacement?
Anyone know of deals on full set or isa this good?
Thanks Tom

cgfen

Agreed.
If you are not having any issues and you don't see any physical damage, leave them be.
I changed mine @ ~ 25K only because one of the wire's insulation was visibly damaged (# 3 exhaust.)


WHOOPS old thread..

trophy

Mine are being changes with my engine rebuild. Once I took them apart and cleaned the I found a number of cracked wires and a cracked sparkplug boot end. my car has 62k on it, lots of track work so heat could be the culprit.

PelicanParts.com

We offer complete sets as well as DIY kits for the 993. If DIYing a complete set, the process is not difficult and shouldn't take longer than a few hours:
Ignition Plug Wire Sets

Mark/Pelican Parts