Re: Intake Gasket Failure Question

by "DonW" <dpw86024.XX2005@[EMAIL PROTECTED] (XX=ng)> Apr 3, 2005 at 11:06 PM

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"pnsman64" <pnsman64@[EMAIL PROTECTED]
> wrote in message =
news:blX3e.403$l13.202@[EMAIL PROTECTED]
>I am a member of this club, 98 Lumina 3.1 once when it was under =
warranty=20
> and now again at almost 80k!  I plan on replacing the coolant fluid =
with the=20
> good old fa****on Prestone green antifreeze.  Does anyone think all =
this=20
> trouble may be from the new dex coolant or just crappy design?

I've had the top part of the engine off a couple times replacing =
injectors and the lower manifold gasket.  There was very little =
corrosion anywhere.  I have changed the Dexcool on 2 1/2 - 3 yr. =
intervals and changed the pressure cap to one having a spring-loaded =
relief per item 4 in this article: Dexcool Article
So, based on my observations I'd choose crappy design.
Ian has posted info recently on a new gasket released and fastener specs =
for this engine family.  Don't know if there's enough history yet to =
know if it fixes the problem.
My vehicle was a 98 Pontiac Montana.



>=20
>=20
> "****den_kai" <violet_lightening_modified@[EMAIL PROTECTED]
> wrote in message =

> news:bXW3e.892058$8l.44957@[EMAIL PROTECTED]
>> nospam.clare.nce@[EMAIL PROTECTED]
 wrote:
>>
>>> How can you blame it on the technicians or poor preparation on a
>>> factory new engine? It is GM's fault - pure and simple. A design =
that
>>> uses low clamping loads combined with gasket materials that cannot
>>> seal under low clamp load conditions is poor design, no ifs, ands, =
or
>>> buts about it.
>>
>> I was talking about the RTV section of the gasket.  Eventually
>> they all do leak, but I and other techs that I know that take the
>> time to use RTV properly don't see the intake gasket back leaking
>> from the RTV very often.  But the one's that dont take care, usually
>> are re-doing them.
>>
>> The entire engine design is suspect....but you are right, bean =
counters
>> will do us in.
>>
>> Ian
>>=20
>=20
>
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<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>"pnsman64" &lt;</FONT><A=20
href=3D"mailto:pnsman64@[EMAIL PROTECTED]
"><FONT face=3DArial=20
size=3D2>pnsman64@[EMAIL PROTECTED]
></A><FONT face=3DArial size=3D2>&gt; =
wrote in=20
message </FONT><A href=3D"news:blX3e.403$l13.202@[EMAIL PROTECTED]
"><FONT =
face=3DArial=20
size=3D2>news:blX3e.403$l13.202@[EMAIL PROTECTED]
></A><FONT face=3DArial=20
size=3D2>...</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>&gt;I am a member of this club, 98 =
Lumina 3.1 once=20
when it was under warranty <BR>&gt; and now again at almost 80k!&nbsp; I =
plan on=20
replacing the coolant fluid with the <BR>&gt; good old fa****on Prestone =
green=20
antifreeze.&nbsp; Does anyone think all this <BR>&gt; trouble may be =
from the=20
new dex coolant or just crappy design?</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>I've had the top part of the engine off =
a couple=20
times replacing injectors and the lower manifold gasket.&nbsp; There was =
very=20
little corrosion anywhere.&nbsp; I&nbsp;have changed the Dexcool on 2 =
1/2 -=20
3&nbsp;yr. intervals and changed the pressure cap to one having a =
spring-loaded=20
relief per item 4 in this article: </FONT><A=20
href=3D"http://www.imcool.com/articles/antifreeze-coolant/dexcool-macs200=
1.htm"><FONT=20
face=3DArial size=3D2>Dexcool Article</FONT></A></DIV>
<DIV><FONT face=3DArial size=3D2>So, based on my observations I'd choose =
crappy=20
design.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Ian has posted info recently on a new =
gasket=20
released and fastener specs for this engine family.&nbsp; Don't know if =
there's=20
enough history yet to know if it fixes the problem.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>My vehicle was a 98 Pontiac =
Montana</FONT>.</DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><BR><FONT face=3DArial size=3D2>&gt; <BR>&gt; <BR>&gt; "****den_kai" =

&lt;</FONT><A =
href=3D"mailto:violet_lightening_modified@[EMAIL PROTECTED]
"><FONT=20
face=3DArial =
size=3D2>violet_lightening_modified@[EMAIL PROTECTED]
></A><FONT=20
face=3DArial size=3D2>&gt; wrote in message <BR>&gt; </FONT><A=20
href=3D"news:bXW3e.892058$8l.44957@[EMAIL PROTECTED]
"><FONT face=3DArial=20
size=3D2>news:bXW3e.892058$8l.44957@[EMAIL PROTECTED]
></A><FONT =
face=3DArial=20
size=3D2>...<BR>&gt;&gt; </FONT><A=20
href=3D"mailto:nospam.clare.nce@[EMAIL PROTECTED]
"><FONT face=3DArial=20
size=3D2>nospam.clare.nce@[EMAIL PROTECTED]
></A><FONT face=3DArial =
size=3D2>=20
wrote:<BR>&gt;&gt;<BR>&gt;&gt;&gt; How can you blame it on the =
technicians or=20
poor preparation on a<BR>&gt;&gt;&gt; factory new engine? It is GM's =
fault -=20
pure and simple. A design that<BR>&gt;&gt;&gt; uses low clamping loads =
combined=20
with gasket materials that cannot<BR>&gt;&gt;&gt; seal under low clamp =
load=20
conditions is poor design, no ifs, ands, or<BR>&gt;&gt;&gt; buts about=20
it.<BR>&gt;&gt;<BR>&gt;&gt; I was talking about the RTV section of the=20
gasket.&nbsp; Eventually<BR>&gt;&gt; they all do leak, but I and other =
techs=20
that I know that take the<BR>&gt;&gt; time to use RTV properly don't see =
the=20
intake gasket back leaking<BR>&gt;&gt; from the RTV very often.&nbsp; =
But the=20
one's that dont take care, usually<BR>&gt;&gt; are re-doing=20
them.<BR>&gt;&gt;<BR>&gt;&gt; The entire engine design is suspect....but =
you are=20
right, bean counters<BR>&gt;&gt; will do us in.<BR>&gt;&gt;<BR>&gt;&gt;=20
Ian<BR>&gt;&gt; <BR>&gt; <BR>&gt;</FONT></DIV></BODY></HTML>

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37 Posts in Topic:

Intake Gasket Failure Question

"Jack L. Spratt"

2005-04-02 12:25:45

Re: Intake Gasket Failure Question

Geoff Welsh <geoffduby

2005-04-02 17:49:44

Re: Intake Gasket Failure Question

aarcuda69062 <nonelson

2005-04-02 18:57:49

Re: Intake Gasket Failure Question

Geoff Welsh <geoffduby