Broken Spark plug help

[Brokengun]

The spark plug gremlins got me.

I was changing spark plugs in my 930CK propane and a spark plug twisted off just below the area where the socket sets.

Anyone got a sure fire way to remove a broken plug?

Hopefully without removing the head?

 

[chuck machinist]

I have spent numerous hours on extracting such Monsters like this.Do not hesitate to soak what is left of the plug with PB blaster or what I use Kroil Oil.Some will even melt bees wax in it also.Drill what you can into the plug up to 3/8 of an inch.Select a square easyout of the appropriate size,and lightly tap it in the plug.Get an eight point socket that will fit the top of the eazyout.Ratchet it out counterclockwise. Do not force it beyond a reasonable pressure.do not hesitate to soak it again.and walk away from it for a couple of hours,or days.Patience! Patience,and oh yes,Patience.

 

[rustred]

yep, did the exact same thing when an autolite plug broke of for me. that's another reason I stick with champion, there is more meat at the bottom of plug.

 

[casenut1]

I think i dated her once. She had a lot of patience's.

 

[Brokengun]

It was an AC Delco plug that i twisted off.

I also broke an easy out, so now i have a broken easy out stuck in a broken and stuck plug.

Oh i am using PB Blaster.

SO does anyone know how to get a broken easy out out of a broken spark plug

 

[casecollectorsc]

How much of that crap is going to fall in the cylinder and rattle when you do get it running??

 

[retired farmer]

Pull it out by the road and put a sign on it, FOR SALE, Ran Before Parked.

 

[chuck machinist]

WELLLL! IF YOU OWN A BURR GRINDER AND A CARBIDE BURR BIT .1/4 " PREFERED.BEGIN GRINDING OUT YOUR EASY OUT,SINCE IT IS SOFTER THAN THE BURR BIT.FACE SHIELD AND GLOVES ARE A MUST. DO NOT WORRY IF YOU BREAK THROUGH TO THE CYLINDER.THAT WILL BE COVERED IN CHAPTER 3. CHUCK

 

[Mike in Mn.]

A friend of mine twisted two off and here is what worked for me. Sharpen a 1/2 inch bolt about 4 inches long so it will stick into the twisted off plug hole and with an 1/8 inch rod, arc weld the bolt to the plug, with a wrench keep tension on the bolt and with a long punch tap at the base of the plug, we were able to get them both out. These were prestolite plugs.

 

[FarmerHR]

Sorry about your mishap !
I have used tap extractors on taps. They have some skinny blades that go in the spaces of the tap (easy out). I believe most tool supply companies sell them. Might try looking at the McMaster Carr web site. I have done this on taps but not easy outs.
Hope this helps.
Thanks

 

[FarmerHR]

Another thought. I have loosened broken easy out by soaking them with your favorite penetrant and the tapping on the back of the easy out with a pin punch. You can tell when they loosen by the sound of the punch when it is hit. Once loose you can probably fish it out with some bent wires etc.
I would worry about how to handle the grinding dust if you decide to try and grind it out.
I really feel for you. It happens so quick !
Thanks

 

[JGarner]

At this point I would count on removing the head. That said, pull the head, take it to a machine shop and see if they can burn the easy out from the bore of the broken plug. This will do 2 things, get a new hole in the broken plug to try again and get some heat to the threads that may loosen it. As well you may try to drill the hole a little bigger (after the easy out is removed) with a left hand flutted drill bit and a reversible drill. Instead of the dril bit turning to the right it turns to the left to drill and when the bit start to break through it may twist out the broken end. Do this with a 1/2 drill motor as they are usually geared low and have a lot of torque.

Jim

 

[Brokengun]

It looks like i get to pull the head.

I ran the tractor hoping the heat would warm up the the head enough so i could get the broken plug bottom out but I only managed to break an easy-out.

I used PB Blaster several times but it had no effect.

I think I have a way to drill and clean out the threads.

I was just hoping to find a way to remove the broken plug witout removing the head.

I just painted the tractor replaced the radiator and re-done the wiring and before i can get it out of the shop i have to start taking it apart again.

BUMMER!