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Ok i think the title has summed it up.
Today i was happily replacing my spark plugs as you do, when unscrewing a spark plug, i found it came up with no thead on it.. Look down in the spark plug well, and i can see the thread is still in there.
I realise this is a major problem, but can anyone give me any advise on fixing it.
You will probably have to have somebody heli-coil the head.
The most important thing you can do here though (wether you heli-coil it or not) is to vacuum out that cylinder with a straw on a shop vac as best you can.
depending on how bad it is then like gsx said you can try an eazy out or you may even be able ot just walk the threads out with a screwdriver or small pick tool. Obviously the most important thing is making sure that no metal particles make their way into the combustion chamber. When you're done even if you dont drop anything in there you should still blow some compressed air in to the cylinder and listen for anything moving around in there just to make sure that nothing fell in there when removing the plug originally.
if possible post some pics of the spark plug as well as the spark plug bore in the cylinder head.
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