Spark Plug Snapped Off In Hole

Hi Guys
Need a little advice.
I have a speed triple 1050 on the 10 plate in blazing orange which is my pride and joy I had an issue with it not starting or getting any life from the dials while on the Isle Of Man for the TT this year. Upon returning home I done some digging and with some advice from my local triumph dealer decided it was the ignition switch. Removing the ignition switch required quite a strip down so when it was stripped I decided to do an oil and plug service. While installing the centre plug it snapped off in the hole! I had my torque wrench set at 10nm NGK recommend 10-15nm and it didn't get there! After 5 mins of panic and sweating I calmed down enough to figure out how to remove the threaded part of the plug from the hole. My questions are There is a chance that a piece of swarf of a very small fragment of metal may have fallen into the chamber. How will I know? will it work its way out? and is it possible the fragment is so small that it may not be an issue? I did put a telescopic magnet into the hole afterwards but it came up clean. I am just a bit worried, Thankyou in advan

 

Thanks Sprinter. I know 10nm is nothing but I like to err on the side of caution when it comes to plugs. I have changed countless plugs in my time and always used the torque wrench
since I snapped a plug 10 years ago and all have been fine since even the two others on my triple went in no probs. I can be very heavy handed so it stops me going to far!

 

Thanks Yorkshireman
The plug hole is 10mm wide and about 6 or7 inches down from the top of the engine so access is very limited but I will give it a go, cheers

 

Sorry Sprinter, Why? because I am heavy handed? or you thought the wrench was 10 years old?(its 18months old) or because its a torque wrench and it needs to be checked after a while?

 

Cheers Crispey, that's a good shout!

 

Hi Tricky Dicky
Thanks for your comments and advice. The plug broke at the top of the thread right where the crush washer sits. I am always careful putting plugs in and now that one has broken using the wrench I think I will take yours and others advice and just "feel it" I think it may have been a faulty plug because I took it back to where I bought it and the guy didn't even quibble , just gave me a new plug for free! Going back to your comment about things passing through the engine surely if a fragment of metal from the plug has fallen into the cylinder there is no way out once a plug is in? I am not sure what it looks like inside the cylinder of my speed triple so I don't know if there is a possible way out? Sean

 

Cheers tricky
Once again thanks for you advice. I have put in many plugs over the years in both bikes and cars I have had the porcelain break above the nut once but never the thread! That’s why I think the plug was faulty there was virtually no pressure applied to it before it snapped and the fact that the motor factors gave me a replacement NGK plug for free makes me think they have come across this before. Anyway I put the bike on the road today with new plugs K&N filter cleaned the throttle bodies tightened the throttle cable and it runs like a dream very peppy done 150 miles on it. Fingers crossed.