Rich
Is the thread on the O2 sensor the same as a spark plug? Looking through my tools I did find a spark plug thread chaser. I can't remember if I used it for the sensor or not.
I think I did because I never did anything with any spark plug threads on my Westy. Can you confirm that the threads are the same?

Dennis

Dennis Jowell
Scotch Hollow Farm
Newbury, Vermont 

> On Oct 2, 2015, at 10:16 AM, Richard Koller <brvkoller@gmail.com> wrote:
> 
> Dennis, 
> I forgot to mention that I had to restore the threads in the O2 bung with a thread chaser ( if my memory holds, I used a spark plug thread chaser ) after removing the sensor. I've done this a couple times and it has worked out each time and I was able to reuse the O2 sensor with no problem.
> Rick
> 
>> On Fri, Oct 2, 2015 at 9:43 AM, Richard Koller <brvkoller@gmail.com> wrote:
>> Dennis,
>> I had this same problem and I heated the cat at the junction where the O2 sensor screws in with MAPP gas. Then quickly slipped my 22mm box end over the disconnected sensor wires and was able to break it free. It would be better as others have said to use the dedicated O2 sensor socket. Heat was essential however in my case.
>> Good luck.
>> Rick Koller
>> 
>>> On Thu, Oct 1, 2015 at 12:37 PM, Dennis Jowell <dennisjowell@gmail.com> wrote:
>>> I just started to replace my O2 sensor on my 2.2 wbx. No,luck using my wrenches . Everything is rusted together. The catalytic converter is only about a year old. Is there a better way to remove the sensor? Should I use my touch to heat the sensor ? Any ideas would be great. I might get to Quebec yet just have to get this done.
>>> 
>>> Regards,
>>> Dennis
>>> 
>>> Dennis Jowell
>>> Scotch Hollow Farm
>>> Newbury, Vermont
>