Ok here's my dilemma. I was pulling plugs from my 92 GMC Jimmy 4x4. 4.3l vin code Z. The center plug on the passenger side twisted off leaving the threads and center of the plug stuck in the head. Short of pulling the head, anyone have any ideas for extricating the rest of the plug and not leaving debris inside the cylinder?
Also which other plug would I have to pull to essentially make it a four cylinder until I can fix the plug issue above?
Any and all help would be greatly appreciated!!!

Thanks
Troy

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Yeah you can drill down the center of it and use a SCREW EXTRACTOR set to possibly remove it. Its tight quarters in there for a drill to go straight so you may be pulling the head my friend.... Not to mention that the plug electrode is possibly Iridium or another dense-hard metal that will eat up anything but the expensive drill bits.

If you run that engine with one plug not firing, you are killing the engine. It will wash the cylinders in the one that is not firing for one - you will also have a cold spot in the middle of the head so it will greatly add to the risk of warping the head and the gasket can start to fail. However, if you have to get it home, then run it on 5 and take it real easy on the heat and throttle and try and not get up to operating temp - like a 5 minute drive. You would be safer running it longer if you could get that busted plug right out.

 

What he said ^^^

If you get it out, take something small like a straw, tap it to the end of a vacuum hose. Suck out all the debris from the cylinder. Just to try eliminate any cylinder damage.

 

Thanks for the replies. I started the engine and the compression, with a little persuasion from a screw driver and needle nose pliers, pushed the rest of the ceramic and electrode out, Sprayed it up with PB Blaster and got an E Z Out in it and with a warm engine got it to come out!!
Thanks again!!

 

Glad to hear you got it out.