Mustang Forum - Mustang World

Mustang Grilles, Mustang Windshield banners, Mustang Bumper inserts and more at MW

Go Back   Mustang Forum - Mustang World > Technical Discussion > 4.6L Performance

Thread Tools
Old 01-23-2018, 05:40 PM   #1
Registered User
Join Date: Sep 2006
Posts: 1
Blown-out spark-plug hole is a mess

Hi all.

Years ago a spark plug blew out of my '96 Cobra, and the dealer repaired it with (reportedly) a helicoil.

Now (perhaps 10 years later), that cylinder is misfiring. I've replaced the plug wires, and in doing so I noticed that the spark-plug boot doesn't insert all the way on the repaired cylinder. I suspect that the repair is somehow failing, which is apparently not uncommon.

I got a cheap borescope so I could take a look in there, and this is what I see:

Clearly the repaired hole looks like a mess, and there's that mysterious fragmentary shape at the 3:00-4:00 position.

I was thinking of getting the oversized TimeSert repair kit and going at this thing, but upon seeing this mess I don't even know what's going on in there. Anybody have any opinions?

stokestack is offline   Reply With Quote

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT -8. The time now is 08:06 PM.

Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
Copyright 2012