It seems from my reading of posts like this one, that it is the failure of
this seal that causes the internal leaks, that lead to compression gasses
entering the coolant.

Is this true?

If so, is there any way one can test the cylinders, to indicate which
cylinder(s) has a failed o-ring(s)?

TIA,

Marshall Ruskin
On a whole weeks leave from work!

>Eric, I would definately clean out this groove that seems to be causing
your
>problem.  You might try scraping it out with a screw driver (sometimes they
>get deposits on them that can be scraped off) or you may want to remove the
>cylinder and have a machine shop repair the groove.  You can put the
cylinder
>back on later with a large hose clamp as a ring compressor (done it several
>times with no problems).  I have spent alot of time on these grooves in the
>past on customers engines that were overheated, etc as they seem to get
>deposits in them that can cause the o-rings not to seat.  I always put a
>little oil on the o-ring as well, just to allow it to slide on smooth with
no
>binding.  I haven't had a head gasket repair fail yet.  Hope this helps
you.
>
>Thanks,
>Ken Wilford
>http://www.vanagain.com
>John 3:16
>Phone: (856)-765-1583
>Shop:   (856)-327-0027
>Fax:     (856)-327-2242
>