Swollen spark plug wires
 

Anyone ever seen anything like this; see pic?

Ordered the Petronix custom fit plug wires and here is what I get after 250 miles. Most of the wires are starting to do this close to the spark plug end.

I am running the factory distributor with a Crane electronic ignition conversion on a 402. Wanted to keep engine compartment stock appearing and hate making plug wires...any ideas of the cause or wire recommendations appreciated.

Thanks in advance.

Re: Swollen spark plug wires
 

No, never...

Re: Swollen spark plug wires
 

Call Petronix.
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Re: Swollen spark plug wires
 

MSD or Taylor wires for me

Re: Swollen spark plug wires
 

Low quality silicone compound in the sleeving. I have heard that could happen but yours is the first I have ever seen...

Re: Swollen spark plug wires
 

Having pictures is good documentation. I'd contact the manufacturer - looks like a manufacturing defect to me.

Re: Swollen spark plug wires
 

If NEVER seen anything like that before. Wow. MSD for me and never had any problems. Call the manufacturer and obviously stop drivin the truck until u swap them out.

Weev-
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Re: Swollen spark plug wires
 

Never seen it on new wires.I have seen it on old oil/gas/solvent soaked wires.

Re: Swollen spark plug wires
 

Is this a new type od wires for Pertronics or have these been out a while?

Re: Swollen spark plug wires
 

Are they the stock style 7mm wires? If so i put a set on my car a few weeks back and have around four hundred mile on them....i will have a close look tomorrow!

Re: Swollen spark plug wires
 

I sent the manufacturer the pics, they had never seen it before either. New set on the way once I remove the old ones and send them back. Hopefully just a bad set of wires.

Bizarre for sure?

Re: Swollen spark plug wires
 

These are the stock appearing precut length 7MM wires they offer.

Re: Swollen spark plug wires
 

You might think about hi-temp woven "sox" around your plug wires if they're real close to the manifold.