HEGO on exhaust manifold threads bad

3tbird

Registered User
I pulled the exhaust manifold O2 today and found outer threads bad. So it's hard to get the new one in.

Looks like pitch is 16...has anyone uses a tap to clean up the threads? If so, what size and any tricks? (yep, manifold is still on the engine)

Alternate ideas requested too! Thanks in advance!
 
I know that the oxygen sensor threads are the same as the older style large thread spark plugs, actually metric M18. Not sure what the pitch is though, sorry.



cheers
Ed Nicholson
SCCoO
 
THANKS TO ALL!

YEP, it's the same as the old plug style.....found a Spark Plug thread chaser (double ended - M18/M14) at Pepboys for $3.99.

Cleaned up the threads and it went in fine! :D

THANKS FOR THE REPLIES
 
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