To ensure success, I'd drain the coolant from the engine, then heat the area around the plug before giving 'er hell w/the easy out.
Broken Spark Plug in LT4
Thread Starter
Intermediate
Joined: Jan 2022
Posts: 36
Likes: 4
From: San Jose, CA
Broken Spark Plug in LT4
Hey guys my cars been missfiring so I just started taking on the job of changing all the spark plugs and wires in hopes that will be my answer to the cars problems. While trying to undue #4 it was definetly over tightened and I ended up accidetnaly snapping it off, with half of the spark plug still remaining in it. Looking at it now Id blame the p.o. with his install but never the less now it is my problem to deal with. Ill attach a youtube link of the crime scene here.
Any suggestions would be super appreicated. Ive heard the right route is to use an extrator or the easy out tool but looking at the space I have to access it with the c4 bay I dont believe it will be possible so I wanted to see if anyone here knows what I should do so I dont have to take it to my guy again
Any suggestions would be super appreicated. Ive heard the right route is to use an extrator or the easy out tool but looking at the space I have to access it with the c4 bay I dont believe it will be possible so I wanted to see if anyone here knows what I should do so I dont have to take it to my guy again
Last edited by txmtxm999; Jul 29, 2023 at 03:25 PM.
Safety Car
Joined: Mar 2017
Posts: 4,191
Likes: 1,317
From: LeClaire Iowa
My idea will have little chance of sucess but it did work for me once 24 years ago. I was able to bribe a machine shop employee to come to my house for a 15 minute job. Don't screw up what is left before an expert sees it. You have a good amount of cash to bribe as you don't have to have it towed. Dan
Safety Car
Joined: Mar 2017
Posts: 4,191
Likes: 1,317
From: LeClaire Iowa
The problem about trying this yourself ,for the first time ever , is if you fail and mess it up your next choice is to remove the head for professional removal. I would feel much better about getting someone who has successfully done this 25 times as opposed to trying to be successful in your first attempt. Dan EDIT: A machine shop employee would have a better chance of success than a "corvette expert" as this is not corvette related except that it is a corvette. The removal would be the same if it was a model T or 57 chevy or a corvette.
Last edited by Whaleman; Jul 29, 2023 at 09:15 AM.
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Safety Car
Joined: Mar 2017
Posts: 4,191
Likes: 1,317
From: LeClaire Iowa
Maybe a really dumb idea but you could try to micro chip the porcelain a little flatter and try to JB Weld a bolt to it and when cured try to pull the porcelain out. This allows the EZ Out to be able to work. Dan
Safety Car
Joined: Nov 2008
Posts: 3,717
Likes: 551
From: Seattle Washington
I have been trying to come up with a solution since you posted this yesterday and have not. My only idea would be to roll the engine over till that cylinder is at TDC. Then chip away at the Porcelain and get as much out as you can. At some point your going to probably going to take a punch and drive what ever is left into the Cylinder. You now only have a thin metal part left and if that is heated up hot it will shrink when it cools down and it will probably screw out. Once out your going to try and Vacuum the parts that are laying on the Piston ( TDC right ) out. Q tip with grease on it ? In reality your going to have to remove the Head. But doing the above will at least give you the satisfaction you tried your best to avoid it.
Safety Car
Joined: Mar 2017
Posts: 4,191
Likes: 1,317
From: LeClaire Iowa
Maybe take one of the other old plugs and cut it where yours is broken. This will allow you to see how tight the ceramic you have in the broken one is in the plug. It might not take much to pull it out. Dan
Drifting
Joined: Jun 2020
Posts: 1,355
Likes: 396
From: Northwest Ohio
Safety Car
Joined: Mar 2017
Posts: 4,191
Likes: 1,317
From: LeClaire Iowa
Thread Starter
Intermediate
Joined: Jan 2022
Posts: 36
Likes: 4
From: San Jose, CA
Thanks everyone for the suggestions, I feel as if maybe I should just play it safe and take it to a machine shop as someone said. I have very low experience and I know everyone has to start somewhere but I would rather not start here lol. Ive done other stuff for this car but the risk factor on this one is too high for me. Unless the quotes i get are insane ill just leave her for someone else to fix this time around. Thanks again!
Safety Car
Joined: Dec 2009
Posts: 4,363
Likes: 429
From: Birmingham Al
Don't guess at it ,call a Auto machine shop that does head work ask how to do this , most are good people and might help ya out. The deal is if ya mess it up to the point were they can't get it out, going to need another head, yep lots work welcome to the world of owning a old AUTO and a vette NO room to do anything .. Heat is your friend .. There is a deal out now ya spray on parts that freeze the part shrinks it, I read it works??? I never used it. GOOD LUCK ..
