John Stio

My local mechanic told me that this is a common problem in the Jeep 4.0.
That he has seen it and repaired it many times.

After having the head replaced, and obviousely the head gasket, it had been
fine, coolant level stayed normal.

There are no signs of coolant in the oil, or leaking externally. The other
odd thing is, it does not blow excessive smoke. On a pressure test, the
cooling system will hold pressure just fine.

According to my Mechanic, the crack in the head causes the coolant to leak
into the cylinder after the vehicle is turned off. Basically i lose about an
Overflows worth of coolant over a month or so.

I love my jeep, but i am getting fed up. in 2 1/2 years and 40,000 miles, i
should not be going on my third head.

"Dave Milne" <jeep@_nospam_milne.info> wrote in message
news:WJAQb.8689$0c1.94998774@news-text.cableinet.net...
> Any mayo in the oil, John ?
>
> Dave Milne, Scotland
>
> "John Stio" <jstio@optonline.net> wrote in message
> news:zBAQb.14055$O22.8725076@news4.srv.hcvlny.cv.n et...
> > Thanks Guys,
> >
> > I will look into these things.
> > Just to answer your questions, I have seen no external leaks, all looks
> > clean.
> >
> > From the last time, it has never overheated.
> >
> > THanks for all ur input. Hopefully it turns out to be something minor.
> >
> > "Dave Milne" <jeep@_nospam_milne.info> wrote in message
> > news:TQzQb.8654$oM.94638298@news-text.cableinet.net...
> > > If your first one failed from overheating you may also have warped the
> > > block, causing gasket failure on your second one,which is losing the
> > coolant
> > > and may have cracked/warped the cylinder head. (I'm assuming you know
> that
> > > the best way to crack a cylinder head is to pour cold water into the
hot
> > > engine when you notice that the coolant is low, but I thought I'd
> mention
> > it
> > > just for completeness :-)).
> > >
> > > Dave Milne, Scotland
> > >
> > >
> > > "Matt Osborn" <msosborn@spam_trap@attglobal.net> wrote in message
> > > news:q5e510l9111jfrbtnq59v1ho3rui9dr8oe@4ax.com...
> > > > On Sat, 24 Jan 2004 15:28:16 GMT, "John Stio" <jstio@optonline.net>
> > > > wrote:
> > > >
> > > > >I have an 02 TJ, at around 24,000 miles i noticed coolant missing.
> > after
> > > > >many visits to the dealer and local mechanics, it turns out the
head
> > was
> > > > >cracked. The head was replaced at 30,000 miles this past July.
> > > > >
> > > > >The jeep now has 40,000 miles and two weeks ago, i noticed the
> coolant
> > > level
> > > > >dropping yet again.
> > > > >
> > > > >Does anyone know what the flaw is, and why these heads crack so
> > > easily????
> > > >
> > > > Never heard of it.
> > >
> > >
> >
> >
>
>

John Stio

My local mechanic told me that this is a common problem in the Jeep 4.0.
That he has seen it and repaired it many times.

After having the head replaced, and obviousely the head gasket, it had been
fine, coolant level stayed normal.

There are no signs of coolant in the oil, or leaking externally. The other
odd thing is, it does not blow excessive smoke. On a pressure test, the
cooling system will hold pressure just fine.

According to my Mechanic, the crack in the head causes the coolant to leak
into the cylinder after the vehicle is turned off. Basically i lose about an
Overflows worth of coolant over a month or so.

I love my jeep, but i am getting fed up. in 2 1/2 years and 40,000 miles, i
should not be going on my third head.

"Dave Milne" <jeep@_nospam_milne.info> wrote in message
news:WJAQb.8689$0c1.94998774@news-text.cableinet.net...
> Any mayo in the oil, John ?
>
> Dave Milne, Scotland
>
> "John Stio" <jstio@optonline.net> wrote in message
> news:zBAQb.14055$O22.8725076@news4.srv.hcvlny.cv.n et...
> > Thanks Guys,
> >
> > I will look into these things.
> > Just to answer your questions, I have seen no external leaks, all looks
> > clean.
> >
> > From the last time, it has never overheated.
> >
> > THanks for all ur input. Hopefully it turns out to be something minor.
> >
> > "Dave Milne" <jeep@_nospam_milne.info> wrote in message
> > news:TQzQb.8654$oM.94638298@news-text.cableinet.net...
> > > If your first one failed from overheating you may also have warped the
> > > block, causing gasket failure on your second one,which is losing the
> > coolant
> > > and may have cracked/warped the cylinder head. (I'm assuming you know
> that
> > > the best way to crack a cylinder head is to pour cold water into the
hot
> > > engine when you notice that the coolant is low, but I thought I'd
> mention
> > it
> > > just for completeness :-)).
> > >
> > > Dave Milne, Scotland
> > >
> > >
> > > "Matt Osborn" <msosborn@spam_trap@attglobal.net> wrote in message
> > > news:q5e510l9111jfrbtnq59v1ho3rui9dr8oe@4ax.com...
> > > > On Sat, 24 Jan 2004 15:28:16 GMT, "John Stio" <jstio@optonline.net>
> > > > wrote:
> > > >
> > > > >I have an 02 TJ, at around 24,000 miles i noticed coolant missing.
> > after
> > > > >many visits to the dealer and local mechanics, it turns out the
head
> > was
> > > > >cracked. The head was replaced at 30,000 miles this past July.
> > > > >
> > > > >The jeep now has 40,000 miles and two weeks ago, i noticed the
> coolant
> > > level
> > > > >dropping yet again.
> > > > >
> > > > >Does anyone know what the flaw is, and why these heads crack so
> > > easily????
> > > >
> > > > Never heard of it.
> > >
> > >
> >
> >
>
>

Jerry Bransford

I'll just chime in with the others and agree that cracked heads are
definitely not common on the 4.0L engine. I've actually not even heard of
that happening myself though that's certainly not to say it can't or doesn't
happen.

Jerry
--
Jerry Bransford
To email, remove 'me' from my email address
N6TAY, PP-ASEL
See the Geezer Jeep at
http://members.***.net/jerrypb/

"John Stio" <jstio@optonline.net> wrote in message
news:zaBQb.14736$O22.8912037@news4.srv.hcvlny.cv.n et...
> My local mechanic told me that this is a common problem in the Jeep 4.0.
> That he has seen it and repaired it many times.
>
> After having the head replaced, and obviousely the head gasket, it had
been
> fine, coolant level stayed normal.
>
> There are no signs of coolant in the oil, or leaking externally. The other
> odd thing is, it does not blow excessive smoke. On a pressure test, the
> cooling system will hold pressure just fine.
>
> According to my Mechanic, the crack in the head causes the coolant to leak
> into the cylinder after the vehicle is turned off. Basically i lose about
an
> Overflows worth of coolant over a month or so.
>
> I love my jeep, but i am getting fed up. in 2 1/2 years and 40,000 miles,
i
> should not be going on my third head.
>
> "Dave Milne" <jeep@_nospam_milne.info> wrote in message
> news:WJAQb.8689$0c1.94998774@news-text.cableinet.net...
> > Any mayo in the oil, John ?
> >
> > Dave Milne, Scotland
> >
> > "John Stio" <jstio@optonline.net> wrote in message
> > news:zBAQb.14055$O22.8725076@news4.srv.hcvlny.cv.n et...
> > > Thanks Guys,
> > >
> > > I will look into these things.
> > > Just to answer your questions, I have seen no external leaks, all
looks
> > > clean.
> > >
> > > From the last time, it has never overheated.
> > >
> > > THanks for all ur input. Hopefully it turns out to be something minor.
> > >
> > > "Dave Milne" <jeep@_nospam_milne.info> wrote in message
> > > news:TQzQb.8654$oM.94638298@news-text.cableinet.net...
> > > > If your first one failed from overheating you may also have warped
the
> > > > block, causing gasket failure on your second one,which is losing the
> > > coolant
> > > > and may have cracked/warped the cylinder head. (I'm assuming you
know
> > that
> > > > the best way to crack a cylinder head is to pour cold water into the
> hot
> > > > engine when you notice that the coolant is low, but I thought I'd
> > mention
> > > it
> > > > just for completeness :-)).
> > > >
> > > > Dave Milne, Scotland
> > > >
> > > >
> > > > "Matt Osborn" <msosborn@spam_trap@attglobal.net> wrote in message
> > > > news:q5e510l9111jfrbtnq59v1ho3rui9dr8oe@4ax.com...
> > > > > On Sat, 24 Jan 2004 15:28:16 GMT, "John Stio"
<jstio@optonline.net>
> > > > > wrote:
> > > > >
> > > > > >I have an 02 TJ, at around 24,000 miles i noticed coolant
missing.
> > > after
> > > > > >many visits to the dealer and local mechanics, it turns out the
> head
> > > was
> > > > > >cracked. The head was replaced at 30,000 miles this past July.
> > > > > >
> > > > > >The jeep now has 40,000 miles and two weeks ago, i noticed the
> > coolant
> > > > level
> > > > > >dropping yet again.
> > > > > >
> > > > > >Does anyone know what the flaw is, and why these heads crack so
> > > > easily????
> > > > >
> > > > > Never heard of it.
> > > >
> > > >
> > >
> > >
> >
> >
>
>

Jerry Bransford

I'll just chime in with the others and agree that cracked heads are
definitely not common on the 4.0L engine. I've actually not even heard of
that happening myself though that's certainly not to say it can't or doesn't
happen.

Jerry
--
Jerry Bransford
To email, remove 'me' from my email address
N6TAY, PP-ASEL
See the Geezer Jeep at
http://members.***.net/jerrypb/

"John Stio" <jstio@optonline.net> wrote in message
news:zaBQb.14736$O22.8912037@news4.srv.hcvlny.cv.n et...
> My local mechanic told me that this is a common problem in the Jeep 4.0.
> That he has seen it and repaired it many times.
>
> After having the head replaced, and obviousely the head gasket, it had
been
> fine, coolant level stayed normal.
>
> There are no signs of coolant in the oil, or leaking externally. The other
> odd thing is, it does not blow excessive smoke. On a pressure test, the
> cooling system will hold pressure just fine.
>
> According to my Mechanic, the crack in the head causes the coolant to leak
> into the cylinder after the vehicle is turned off. Basically i lose about
an
> Overflows worth of coolant over a month or so.
>
> I love my jeep, but i am getting fed up. in 2 1/2 years and 40,000 miles,
i
> should not be going on my third head.
>
> "Dave Milne" <jeep@_nospam_milne.info> wrote in message
> news:WJAQb.8689$0c1.94998774@news-text.cableinet.net...
> > Any mayo in the oil, John ?
> >
> > Dave Milne, Scotland
> >
> > "John Stio" <jstio@optonline.net> wrote in message
> > news:zBAQb.14055$O22.8725076@news4.srv.hcvlny.cv.n et...
> > > Thanks Guys,
> > >
> > > I will look into these things.
> > > Just to answer your questions, I have seen no external leaks, all
looks
> > > clean.
> > >
> > > From the last time, it has never overheated.
> > >
> > > THanks for all ur input. Hopefully it turns out to be something minor.
> > >
> > > "Dave Milne" <jeep@_nospam_milne.info> wrote in message
> > > news:TQzQb.8654$oM.94638298@news-text.cableinet.net...
> > > > If your first one failed from overheating you may also have warped
the
> > > > block, causing gasket failure on your second one,which is losing the
> > > coolant
> > > > and may have cracked/warped the cylinder head. (I'm assuming you
know
> > that
> > > > the best way to crack a cylinder head is to pour cold water into the
> hot
> > > > engine when you notice that the coolant is low, but I thought I'd
> > mention
> > > it
> > > > just for completeness :-)).
> > > >
> > > > Dave Milne, Scotland
> > > >
> > > >
> > > > "Matt Osborn" <msosborn@spam_trap@attglobal.net> wrote in message
> > > > news:q5e510l9111jfrbtnq59v1ho3rui9dr8oe@4ax.com...
> > > > > On Sat, 24 Jan 2004 15:28:16 GMT, "John Stio"
<jstio@optonline.net>
> > > > > wrote:
> > > > >
> > > > > >I have an 02 TJ, at around 24,000 miles i noticed coolant
missing.
> > > after
> > > > > >many visits to the dealer and local mechanics, it turns out the
> head
> > > was
> > > > > >cracked. The head was replaced at 30,000 miles this past July.
> > > > > >
> > > > > >The jeep now has 40,000 miles and two weeks ago, i noticed the
> > coolant
> > > > level
> > > > > >dropping yet again.
> > > > > >
> > > > > >Does anyone know what the flaw is, and why these heads crack so
> > > > easily????
> > > > >
> > > > > Never heard of it.
> > > >
> > > >
> > >
> > >
> >
> >
>
>

Jerry Bransford

I'll just chime in with the others and agree that cracked heads are
definitely not common on the 4.0L engine. I've actually not even heard of
that happening myself though that's certainly not to say it can't or doesn't
happen.

Jerry
--
Jerry Bransford
To email, remove 'me' from my email address
N6TAY, PP-ASEL
See the Geezer Jeep at
http://members.***.net/jerrypb/

"John Stio" <jstio@optonline.net> wrote in message
news:zaBQb.14736$O22.8912037@news4.srv.hcvlny.cv.n et...
> My local mechanic told me that this is a common problem in the Jeep 4.0.
> That he has seen it and repaired it many times.
>
> After having the head replaced, and obviousely the head gasket, it had
been
> fine, coolant level stayed normal.
>
> There are no signs of coolant in the oil, or leaking externally. The other
> odd thing is, it does not blow excessive smoke. On a pressure test, the
> cooling system will hold pressure just fine.
>
> According to my Mechanic, the crack in the head causes the coolant to leak
> into the cylinder after the vehicle is turned off. Basically i lose about
an
> Overflows worth of coolant over a month or so.
>
> I love my jeep, but i am getting fed up. in 2 1/2 years and 40,000 miles,
i
> should not be going on my third head.
>
> "Dave Milne" <jeep@_nospam_milne.info> wrote in message
> news:WJAQb.8689$0c1.94998774@news-text.cableinet.net...
> > Any mayo in the oil, John ?
> >
> > Dave Milne, Scotland
> >
> > "John Stio" <jstio@optonline.net> wrote in message
> > news:zBAQb.14055$O22.8725076@news4.srv.hcvlny.cv.n et...
> > > Thanks Guys,
> > >
> > > I will look into these things.
> > > Just to answer your questions, I have seen no external leaks, all
looks
> > > clean.
> > >
> > > From the last time, it has never overheated.
> > >
> > > THanks for all ur input. Hopefully it turns out to be something minor.
> > >
> > > "Dave Milne" <jeep@_nospam_milne.info> wrote in message
> > > news:TQzQb.8654$oM.94638298@news-text.cableinet.net...
> > > > If your first one failed from overheating you may also have warped
the
> > > > block, causing gasket failure on your second one,which is losing the
> > > coolant
> > > > and may have cracked/warped the cylinder head. (I'm assuming you
know
> > that
> > > > the best way to crack a cylinder head is to pour cold water into the
> hot
> > > > engine when you notice that the coolant is low, but I thought I'd
> > mention
> > > it
> > > > just for completeness :-)).
> > > >
> > > > Dave Milne, Scotland
> > > >
> > > >
> > > > "Matt Osborn" <msosborn@spam_trap@attglobal.net> wrote in message
> > > > news:q5e510l9111jfrbtnq59v1ho3rui9dr8oe@4ax.com...
> > > > > On Sat, 24 Jan 2004 15:28:16 GMT, "John Stio"
<jstio@optonline.net>
> > > > > wrote:
> > > > >
> > > > > >I have an 02 TJ, at around 24,000 miles i noticed coolant
missing.
> > > after
> > > > > >many visits to the dealer and local mechanics, it turns out the
> head
> > > was
> > > > > >cracked. The head was replaced at 30,000 miles this past July.
> > > > > >
> > > > > >The jeep now has 40,000 miles and two weeks ago, i noticed the
> > coolant
> > > > level
> > > > > >dropping yet again.
> > > > > >
> > > > > >Does anyone know what the flaw is, and why these heads crack so
> > > > easily????
> > > > >
> > > > > Never heard of it.
> > > >
> > > >
> > >
> > >
> >
> >
>
>

David C. Moller

Ditto... I'd be a little wary of a mechanic that calls a cracked head
(or even a blown head gasket) on the 4.0L a 'common problem'. Can't
recall it ever being discussed on this newsgroup, and certainly none
of my 10+ friends/aquaintances here locally with 4.0L TJ's (or even
4.0L YJ's) have ever experienced it.

Dave
http://mysite.verizon.net/res0p2es/david/index.htm

On Sat, 24 Jan 2004 13:14:19 -0800, "Jerry Bransford"
<jerrypb@mecox.net> wrote:

>I'll just chime in with the others and agree that cracked heads are
>definitely not common on the 4.0L engine. I've actually not even heard of
>that happening myself though that's certainly not to say it can't or doesn't
>happen.
>
>Jerry

David C. Moller

Ditto... I'd be a little wary of a mechanic that calls a cracked head
(or even a blown head gasket) on the 4.0L a 'common problem'. Can't
recall it ever being discussed on this newsgroup, and certainly none
of my 10+ friends/aquaintances here locally with 4.0L TJ's (or even
4.0L YJ's) have ever experienced it.

Dave
http://mysite.verizon.net/res0p2es/david/index.htm

On Sat, 24 Jan 2004 13:14:19 -0800, "Jerry Bransford"
<jerrypb@mecox.net> wrote:

>I'll just chime in with the others and agree that cracked heads are
>definitely not common on the 4.0L engine. I've actually not even heard of
>that happening myself though that's certainly not to say it can't or doesn't
>happen.
>
>Jerry

David C. Moller

Ditto... I'd be a little wary of a mechanic that calls a cracked head
(or even a blown head gasket) on the 4.0L a 'common problem'. Can't
recall it ever being discussed on this newsgroup, and certainly none
of my 10+ friends/aquaintances here locally with 4.0L TJ's (or even
4.0L YJ's) have ever experienced it.

Dave
http://mysite.verizon.net/res0p2es/david/index.htm

On Sat, 24 Jan 2004 13:14:19 -0800, "Jerry Bransford"
<jerrypb@mecox.net> wrote:

>I'll just chime in with the others and agree that cracked heads are
>definitely not common on the 4.0L engine. I've actually not even heard of
>that happening myself though that's certainly not to say it can't or doesn't
>happen.
>
>Jerry

Sean Prinz

Is there a chance the deck of the block is not true? If the block is
warped it might be causing it to happen. I have 2 4.0L jeeps...and neither
head has cracked (knock on wood).

Sean


"Jerry Bransford" <jerrypb@mecox.net> wrote in message
news:MeBQb.11455$bg1.10563@fed1read05...
> I'll just chime in with the others and agree that cracked heads are
> definitely not common on the 4.0L engine. I've actually not even heard of
> that happening myself though that's certainly not to say it can't or
doesn't
> happen.
>
> Jerry
> --
> Jerry Bransford
> To email, remove 'me' from my email address
> N6TAY, PP-ASEL
> See the Geezer Jeep at
> http://members.***.net/jerrypb/
>
> "John Stio" <jstio@optonline.net> wrote in message
> news:zaBQb.14736$O22.8912037@news4.srv.hcvlny.cv.n et...
> > My local mechanic told me that this is a common problem in the Jeep 4.0.
> > That he has seen it and repaired it many times.
> >
> > After having the head replaced, and obviousely the head gasket, it had
> been
> > fine, coolant level stayed normal.
> >
> > There are no signs of coolant in the oil, or leaking externally. The
other
> > odd thing is, it does not blow excessive smoke. On a pressure test, the
> > cooling system will hold pressure just fine.
> >
> > According to my Mechanic, the crack in the head causes the coolant to
leak
> > into the cylinder after the vehicle is turned off. Basically i lose
about
> an
> > Overflows worth of coolant over a month or so.
> >
> > I love my jeep, but i am getting fed up. in 2 1/2 years and 40,000
miles,
> i
> > should not be going on my third head.
> >
> > "Dave Milne" <jeep@_nospam_milne.info> wrote in message
> > news:WJAQb.8689$0c1.94998774@news-text.cableinet.net...
> > > Any mayo in the oil, John ?
> > >
> > > Dave Milne, Scotland
> > >
> > > "John Stio" <jstio@optonline.net> wrote in message
> > > news:zBAQb.14055$O22.8725076@news4.srv.hcvlny.cv.n et...
> > > > Thanks Guys,
> > > >
> > > > I will look into these things.
> > > > Just to answer your questions, I have seen no external leaks, all
> looks
> > > > clean.
> > > >
> > > > From the last time, it has never overheated.
> > > >
> > > > THanks for all ur input. Hopefully it turns out to be something
minor.
> > > >
> > > > "Dave Milne" <jeep@_nospam_milne.info> wrote in message
> > > > news:TQzQb.8654$oM.94638298@news-text.cableinet.net...
> > > > > If your first one failed from overheating you may also have warped
> the
> > > > > block, causing gasket failure on your second one,which is losing
the
> > > > coolant
> > > > > and may have cracked/warped the cylinder head. (I'm assuming you
> know
> > > that
> > > > > the best way to crack a cylinder head is to pour cold water into
the
> > hot
> > > > > engine when you notice that the coolant is low, but I thought I'd
> > > mention
> > > > it
> > > > > just for completeness :-)).
> > > > >
> > > > > Dave Milne, Scotland
> > > > >
> > > > >
> > > > > "Matt Osborn" <msosborn@spam_trap@attglobal.net> wrote in message
> > > > > news:q5e510l9111jfrbtnq59v1ho3rui9dr8oe@4ax.com...
> > > > > > On Sat, 24 Jan 2004 15:28:16 GMT, "John Stio"
> <jstio@optonline.net>
> > > > > > wrote:
> > > > > >
> > > > > > >I have an 02 TJ, at around 24,000 miles i noticed coolant
> missing.
> > > > after
> > > > > > >many visits to the dealer and local mechanics, it turns out the
> > head
> > > > was
> > > > > > >cracked. The head was replaced at 30,000 miles this past July.
> > > > > > >
> > > > > > >The jeep now has 40,000 miles and two weeks ago, i noticed the
> > > coolant
> > > > > level
> > > > > > >dropping yet again.
> > > > > > >
> > > > > > >Does anyone know what the flaw is, and why these heads crack so
> > > > > easily????
> > > > > >
> > > > > > Never heard of it.
> > > > >
> > > > >
> > > >
> > > >
> > >
> > >
> >
> >
>
>

Sean Prinz

Is there a chance the deck of the block is not true? If the block is
warped it might be causing it to happen. I have 2 4.0L jeeps...and neither
head has cracked (knock on wood).

Sean


"Jerry Bransford" <jerrypb@mecox.net> wrote in message
news:MeBQb.11455$bg1.10563@fed1read05...
> I'll just chime in with the others and agree that cracked heads are
> definitely not common on the 4.0L engine. I've actually not even heard of
> that happening myself though that's certainly not to say it can't or
doesn't
> happen.
>
> Jerry
> --
> Jerry Bransford
> To email, remove 'me' from my email address
> N6TAY, PP-ASEL
> See the Geezer Jeep at
> http://members.***.net/jerrypb/
>
> "John Stio" <jstio@optonline.net> wrote in message
> news:zaBQb.14736$O22.8912037@news4.srv.hcvlny.cv.n et...
> > My local mechanic told me that this is a common problem in the Jeep 4.0.
> > That he has seen it and repaired it many times.
> >
> > After having the head replaced, and obviousely the head gasket, it had
> been
> > fine, coolant level stayed normal.
> >
> > There are no signs of coolant in the oil, or leaking externally. The
other
> > odd thing is, it does not blow excessive smoke. On a pressure test, the
> > cooling system will hold pressure just fine.
> >
> > According to my Mechanic, the crack in the head causes the coolant to
leak
> > into the cylinder after the vehicle is turned off. Basically i lose
about
> an
> > Overflows worth of coolant over a month or so.
> >
> > I love my jeep, but i am getting fed up. in 2 1/2 years and 40,000
miles,
> i
> > should not be going on my third head.
> >
> > "Dave Milne" <jeep@_nospam_milne.info> wrote in message
> > news:WJAQb.8689$0c1.94998774@news-text.cableinet.net...
> > > Any mayo in the oil, John ?
> > >
> > > Dave Milne, Scotland
> > >
> > > "John Stio" <jstio@optonline.net> wrote in message
> > > news:zBAQb.14055$O22.8725076@news4.srv.hcvlny.cv.n et...
> > > > Thanks Guys,
> > > >
> > > > I will look into these things.
> > > > Just to answer your questions, I have seen no external leaks, all
> looks
> > > > clean.
> > > >
> > > > From the last time, it has never overheated.
> > > >
> > > > THanks for all ur input. Hopefully it turns out to be something
minor.
> > > >
> > > > "Dave Milne" <jeep@_nospam_milne.info> wrote in message
> > > > news:TQzQb.8654$oM.94638298@news-text.cableinet.net...
> > > > > If your first one failed from overheating you may also have warped
> the
> > > > > block, causing gasket failure on your second one,which is losing
the
> > > > coolant
> > > > > and may have cracked/warped the cylinder head. (I'm assuming you
> know
> > > that
> > > > > the best way to crack a cylinder head is to pour cold water into
the
> > hot
> > > > > engine when you notice that the coolant is low, but I thought I'd
> > > mention
> > > > it
> > > > > just for completeness :-)).
> > > > >
> > > > > Dave Milne, Scotland
> > > > >
> > > > >
> > > > > "Matt Osborn" <msosborn@spam_trap@attglobal.net> wrote in message
> > > > > news:q5e510l9111jfrbtnq59v1ho3rui9dr8oe@4ax.com...
> > > > > > On Sat, 24 Jan 2004 15:28:16 GMT, "John Stio"
> <jstio@optonline.net>
> > > > > > wrote:
> > > > > >
> > > > > > >I have an 02 TJ, at around 24,000 miles i noticed coolant
> missing.
> > > > after
> > > > > > >many visits to the dealer and local mechanics, it turns out the
> > head
> > > > was
> > > > > > >cracked. The head was replaced at 30,000 miles this past July.
> > > > > > >
> > > > > > >The jeep now has 40,000 miles and two weeks ago, i noticed the
> > > coolant
> > > > > level
> > > > > > >dropping yet again.
> > > > > > >
> > > > > > >Does anyone know what the flaw is, and why these heads crack so
> > > > > easily????
> > > > > >
> > > > > > Never heard of it.
> > > > >
> > > > >
> > > >
> > > >
> > >
> > >
> >
> >
>
>