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Registered
Join Date: Sep 2000
Location: Denver
Posts: 12
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Stuck Plug
Anyone know the best way to get a seized spark plug out of #6? It backs out so far...then VERY hard to turn. Afraid to give it the torque!
HELP |
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08-22-2001, 06:39 PM
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Senior Member
Join Date: Mar 2000
Location: Lacey, WA. USA
Posts: 25,311
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The moves you make next could be expensive. Bruce Anderson (I think it was Bruce) wrote something about this problem and gave suggestions. I'll look for it. His basic suggestion is to take your time. If it takes you a week to get that thing out, you are still FAR better off than if you stripp the threads.
There are probably carbon deposits at the ends of the threads that are too wide to exit the combustion chamber. I'd say back it out as far as you can, spray your favorite penetrant on, then screw back in and wait. Do this several times if necessary. Are you using the factory spark plug tool? My regular spark plug socket (not the factory tool) cannot fit through the #6 opening with a spark plug in it. ------------------ '83 SC |
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08-22-2001, 06:49 PM
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Registered
Join Date: Feb 2001
Location: Canada
Posts: 120
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The exposed end (threads)are probably covered in carbon and is binding on the threads in the cyl head.I would try and thread the plug out until it starts to bind and then thread it back in a bit and then back out,keep doing this and eventually the carbon should loosen up and the plug should start backing out.take your time and don't try to torque it out as I think you will damage the threads
------------------ Grant 75 911s targa |
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08-22-2001, 06:50 PM
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Registered
Join Date: Dec 1999
Location: TX USA
Posts: 9,804
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I think you would be wise to find some spray Penetrating Oil, and NOT WD-40!!! Back the plug out as far as normal 'force' will allow, then spray quite a bit of the penetrating oil down into the opening with nozzle/tube parallel to the axis of the plug and offset from the center of the opening ... top, bottom, left, right (1-2 seconds each position) of what would be the center of the spark plug electrode connector. Then let it sit overnight ... next, turn the spark plug back down to its' normal seating position, and back it out once more until resistance is felt, spray again with penetrating oil, and let it sit another day/night. Repeat until the plug comes out all the way without excessive force.
If you strip that set of threads ... it could cost you well over $1000 to get it fixed!!! ------------------ Warren Hall 1973 911S Targa 1992 Dodge Dakota 5.2 4X4 parts hauler [This message has been edited by Early_S_Man (edited 08-22-2001).] |
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08-22-2001, 07:18 PM
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