Spark Plug Problem.. Part Missing?

[Hayley]

Hi,
My car started to run on three cylinders over the weekend so I've just removed the plugs to see whats going on. The plug that was in cylinder three has lost the tip and just pops the HT lead off as soon as you try to kick the car up.

I got some new sparks and went about fitting them but when I came to cylinder three it would appear that there is a part missing, bear with me whilst I try to explain this. Basically the hole where you fit the spark plugs into the cylinder should have a little "flange" so that the plug can screw in...but on cylinder three it's missing so the plug has nothing to locate to. This "flange" is there on the other cylinders. So now if you try to fit a spark plug it just spins.

Does anyone know if I can get one of these "flanges" so I can sort this out or is it more drastic than that? Also does anyone know what the real technical name for the "flange" is? lol

Thanks for any help

H
XXX

 

[ben_p]

gutted. u have blown a plug out, the head needs helicoiling, bout 100 notes. and lets pray that the rest of the plug and the old thread isnt sat on a valve seat. that will be messy

 

[Hayley]

The plug is intact, except for the very tip.

WTF is helicoiling?

 

[ben_p]

its a new thread which is drilled into the head like a sleave then u can screw the new plug in, had to do it on my 172. i got it cheap but will cost like 100-120

 

[ben_p]

btw the plug is intact but where has the thread gone from the head? and the tip

 

[Hayley]

Sounds lovely.. f***s sake.

Any idea how i'm gonna know if anythings sitting on the valve, knowing my luck it is.

 

[ben_p]

not really. take it to diesel craft in widnes, they will do it for about 80

 

[Hayley]

Thanks
Since the plug doesnt go in, it is really safe to be driving?

 

[ben_p]

not really. as the cylinder will be sucking and blowning into the engine. dont drive it

 

[Hayley]

fun fun fun...
Thanks for the advice Ben.