Swollen spark plug wires - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Horsman · 10-23-2012, 09:40 PM

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.

67ChevyRedneck · 10-23-2012, 09:57 PM

No, never...

Lee H · 10-23-2012, 10:12 PM

Call Petronix.
Posted via Mobile Device

kaycee · 10-24-2012, 12:22 AM

MSD or Taylor wires for me

**specialtyretail** · 10-24-2012, 01:58 PM

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

**truckster** · 10-24-2012, 02:01 PM

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

weever82 · 10-24-2012, 03:45 PM

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-
Posted via Mobile Device

PanelDeland · 10-24-2012, 08:31 PM

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

**70cst** · 10-24-2012, 09:54 PM

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

crawdadfox · 10-24-2012, 10:13 PM

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!

Horsman · 10-25-2012, 09:02 PM

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?

Horsman · 10-25-2012, 09:20 PM

Quote:

Originally Posted by crawdadfox

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!

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

**'68OrangeSunshine** · 10-26-2012, 12:04 AM

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

10-23-2012, 09:40 PM	#1
Horsman Registered User Join Date: Feb 2011 Location: North Texas Posts: 118	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. Attached Images __________________ Jeff Horsman 1972 C20 Highlander "C" 1966 Olds 442 L69 four speed 1971 Skylark (GS clone racecar) 494 stroker 1986 Buick T-Type

10-23-2012, 09:57 PM	#2
67ChevyRedneck Hittin E-Z Street on Mud Tires Join Date: Nov 2004 Location: Greenville, SC Posts: 23,090	Re: Swollen spark plug wires No, never... __________________ Jesse James 1967 C10 SWB Stepside: 350/700R4/3.73 1965 Ford Mustang: 289/T5-5spd/3.25 Trac-Loc 1968 Pontiac Firebird: Project Fire Chicken! 2015 Silverado Double Cab 5.3L Z71 2001 Jeep Wrangler Sport 4.0L 5spd 2020 Chevrolet Equinox Premium 2.0L Turbo 2011 Mustang V6 ~ Wife's ride American Born, Country by the Grace of God 1967 CST Shop Truck Rebuild! My 1967 C-10 Build Thread My Vintage Air A/C Install Project "On a Dime" Trying my hand at Home Renovation! 1965 Mustang Modifications!

10-23-2012, 10:12 PM	#3
Lee H Registered User Join Date: Jun 2010 Location: Upland Ca Posts: 4,147	Re: Swollen spark plug wires Call Petronix. Posted via Mobile Device __________________ 1972 C10 SWB, Air, PS, PB, 350/350THM. Second owner. 1965 Corvette roadster, 44K miles, 327/365 SHP, 4 speed, side exhaust, knockoffs, teak, second owner (bought in 1970), Have ALL numbers matching components. My frame off restoration thread: http://67-72chevytrucks.com/vboard/s...d.php?t=556703

10-24-2012, 12:22 AM	#4
kaycee Registered User Join Date: Jan 2000 Location: Wyoming USA Posts: 2,446	Re: Swollen spark plug wires MSD or Taylor wires for me __________________ 2001 Silverado K-1500 2005 FXDWG stage3 69 CHEVY Short/Step 327/4L60 373 posi 63 IMPALA 327

10-24-2012, 01:58 PM	#5
specialtyretail So,, what else you got??? Join Date: May 2010 Location: Jackson, Mo Posts: 18,635	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...

10-24-2012, 02:01 PM	#6
truckster Senior Member Join Date: Jan 2001 Location: Orem, Utah Posts: 7,954	Re: Swollen spark plug wires Having pictures is good documentation. I'd contact the manufacturer - looks like a manufacturing defect to me.

10-24-2012, 03:45 PM	#7
weever82 Registered User Join Date: Sep 2012 Location: Queen Creek, AZ Posts: 551	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- Posted via Mobile Device __________________ Weev- Life's tough...... It's even tougher when your stupid - John Wayne

10-24-2012, 08:31 PM	#8
PanelDeland I am a Referee of life. Join Date: Jun 2000 Location: Greensboro N.C. Posts: 13,993	Re: Swollen spark plug wires Never seen it on new wires.I have seen it on old oil/gas/solvent soaked wires. __________________ The 47-present Chevrolet and GMC Truck Message Board Network,it's owners,moderators,members,and associates of any type should not be held responsible for my opinion. You can't fix stupid,not even with duct tape. "My appearance is due to the fact that "GOD" does punish you for having too much fun!" Barrett-Jackson has perfected alchemy,they make rust into gold! "You can lead a horse to water but you can't saddle a duck" "Cleverly disguised as a 'Responsible Adult' "Sometimes your Knight in shining armor is just a retard in tinfoil"

10-24-2012, 09:54 PM	#9
70cst Senior Member Join Date: Feb 2001 Location: New Madison, Ohio Posts: 21,374	Re: Swollen spark plug wires Is this a new type od wires for Pertronics or have these been out a while? __________________ A husband can be right...or...A husband can be happy. 67-72 Chevy and GMC Trucks...The Classic Truck for the Classic Folk. 1970 CST Two tone green, 402BB, 400 Automatic, Tach, Buckets, AC, AM-FM, Tilt, GM CB, GM 8 Tract, LWB, etc JOHN 17:3...The better side of "LIFE" Remember: Everyday is a good day...Some are just gooder!

10-24-2012, 10:13 PM	#10
crawdadfox Registered User Join Date: Aug 2008 Location: New Orleans Louisiana.....a great place to visit but you wouldn't want to live here!!! Posts: 883	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! __________________ Down......with the sickness!!

10-25-2012, 09:02 PM	#11
Horsman Registered User Join Date: Feb 2011 Location: North Texas Posts: 118	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? __________________ Jeff Horsman 1972 C20 Highlander "C" 1966 Olds 442 L69 four speed 1971 Skylark (GS clone racecar) 494 stroker 1986 Buick T-Type

10-26-2012, 12:04 AM	#13
'68OrangeSunshine Senior Member Join Date: Feb 2002 Location: Tucson, AZ USA Posts: 7,440	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. __________________ Every 25 years I like to rebuild that 292, whether it needs it or not.



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