Just got a 1984 Fiero in today. We seem to get all the jobs where they take them apart and can't get them back together or they start the job can't finish and bring the car with a box of "spare parts" or they do the job and run into a problem.
On this Fiero, the owner didn't think that is was necessary to change the plugs and left them in there longer than they should have been. The plugs rusted to crap. When the guy finally went to remove the plugs, one broke off in the head. Now he brings the car to me, expecting a quick fix. We don't usually get many of these and the solution in the past has been to pull the head and take it to the machine shop. Short of pulling the head and removing the plug stub on the bench, has anyone developed a successful method for getting old broken sparkplug stubs out of the head without taking everything apart? If so please pass on your tip. It would be much appreciated.

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87GT 3.4 Turbo- 0-60 5.2 seconds -Best
Engine Controls, ECM goodies, Chip
re-programming & odd electronics stuff

Hammer a T-50 torx bit into the remainder of the plug and turn out with a ratchet works 100% of the time for me.

Heat remaining plug with Torch, and hammer easy out into the hole, remove the plug bit and blow out the hole while turning the engine over (disconnect the coil so it doesnt fire up)

thats how we do it in our shop it works most of the time.. if that fails then remove the head

Dennis, most of us have had the same problem. Most of the time, the ceramic comes out with the wire end of the plug, leaving only the threads in the head. Because of the rusted condition, "most" of the time, the plug twists off without really exerting any torque on the threads. It's been my experience, and many other's have said the same, that an easy out will pull the threads right out without any problem. PB Blaster overnight probably helps.

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Thanks for all the suggestions guys. We will try them and let you know how they work. This leads me to believe that we should be:
1. putting the weather stip back at the edge of the deck lid to prevent water from getting in.
2. applying a liberal amount of grease on the plugs to keep them from rusting away.
3. changing the spark plugs every year, irrespective of mileage.

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87GT 3.4 Turbo- 0-60 5.2 seconds -Best
Engine Controls, ECM goodies, Chip
re-programming & odd electronics stuff

What CaddyRob said. I had the same problem and used the same method he does. I was a little leary at first but used the torch very gingerly as to not get anything to hot. Also, had to use an impact on my EZ-out. Used a number 6 or 7 EZ out can't remember. I would not suggest using an impact on anything smaller then that for fear of breakage!

quote Originally posted by Dennis LaGrua: Thanks for all the suggestions guys. We will try them and let you know how they work. This leads me to believe that we should be: 1. putting the weather stip back at the edge of the deck lid to prevent water from getting in. 2. applying a liberal amount of grease on the plugs to keep them from rusting away. 3. changing the spark plugs every year, irrespective of mileage.

Absolutely. Until mine broke off, I'd never even considered the possiblity, since I had never run into this problem till I bought a mid Atlantic states Fiero, and I've been changing plugs for nearly 40 yrs. I don't think the recall weatherstrip will help an 84 as much as it will other years. The hinge gap area should be too for foward for it to be much of an impact on a 4 cylinder, but having that center vented decklid does have an adverse affect in rainy climates. Water comes in the front portion of the vent, and actually runs backwards to drip down on the exh manifold and spark plug area. I took the side cover off one time and watched when it was raining just to try to figure out how rainwater was getting to the plug area, and that is what it was doing--running back along the underside from the louvered area.

jelly2m8 said:

" Hammer a T-50 torx bit into the remainder of the plug and turn out with a ratchet works 100% of the time for me. "

Used the T-50 torx trick today. Worked great!!! A PLUS for you jelly2m8!

Bob