92 Civic losing coolant and overheating

A head gasket failure is more likely. The group seems to be
getting a lot of such failures due to the heat wave. Though
in this case, the person who sold you the car might have
known...

Repair will cost around $500 to $1000 at a shop.

Do not drive the car. If it overheats too much, the cost of
the repair will rise.

<jophus RemoveThis @gmail.com> wrote
>I just bought a 92 Civic 1.5L with 193,000 miles. It runs
>great when
> the coolant level is full. However, after driving for
> about 30-40
> miles, it loses enough coolant to cause the engine to
> overheat. There
> is very slight evidence of white smoke exhaust, although
> it almost
> undetectable. When I start it, there is the smell of
> coolant that
> comes through the vents. I've replaced the thermostat,
> ECT sensor that
> goes to the fan, upper and lower radiator hoses, and the
> radiator is
> new. Does this indicate that I have a small crack
> somewhere in the
> cylinder head? I've always thought that a malfunction in
> the cylinder
> head would render an engine almost useless

No, it just leaks either coolant into the cylinders or oil
into the cooling system, or both.

Thus you can also check the appearance of the coolant (any
oil in it?) and oil (is it looking thick, like Wendy's
Frosty consistency?).

> and since the engine is
> strong (when not overheating), I assumed the problem was
> somewhere
> else. If it is the cylinder head, which is the best route
> to take in
> purchasing a new head: brand new or remanufactured?
> Thanks. Paul
 >> Stay informed about: 92 Civic losing coolant and overheating 

"Elle" <honda.lioness.RemoveThis@nospam.earthlink.net> wrote in message
news:NfvBg.795$Qf.49@newsread2.news.pas.earthlink.net...
> Coolant should not spray out of any cylinder. Your 92 Civic has a breach
> of the cooling system, permitting coolant to cross an engine head gasket,
> head, or block boundary and get into the cylinders. Head gasket failure is
> far more likely than a head or block failure.
>
I'm guessing there is a warp of the head in conjunction with the bad gasket,
but the fix is basically the same either way: the head has to come off, be
checked and/or milled for flatness, and a new head gasket has to be fitted.

As Elle indicates, it is not just a possibility any more. The spraying of
coolant out one cylinder when another is pressurized is a positive
indication.

Mike
 >> Stay informed about: 92 Civic losing coolant and overheating 

jophus DeleteThis @gmail.com wrote:
> Thanks for the responses. I did a cyl compression test today.
> Starting w/ cyl #4, I read a compression of about 225. The other 3
> cylinders read significantly lower, closer to 190. (This could be
> because I failed to notice that the adapter that came w/ my compression
> gauge got left behind in cyl #4, so the remaining 3 cyls' didn't seal
> tight enough, leading to lower readings--the adapter is still in #4.
> It's too hot outside for me, apparently.) Ok, what stood out most to
> me was that while performing the final 3 tests, coolant sprayed out of
> #4. What does this indicate?

what does it indicate? it indicates that your planet earth is about to
collide with your sun. the party's over. the cops are knocking on the
door and are just about to shoot the lock off. the microwave doesn't
work. your girlfriend has left you for a quebecois waiter named marcel.
and you need a new head gasket.

google rec.autos.makers.honda for a thread titled "Proper Radiator Cap
Pressure Rating for 1994 Honda Accord EX?"

> Thanks again. Paul
>
>
 >> Stay informed about: 92 Civic losing coolant and overheating 

Michael Pardee wrote:
> "Elle" <honda.lioness RemoveThis @nospam.earthlink.net> wrote in message
> news:NfvBg.795$Qf.49@newsread2.news.pas.earthlink.net...
>> Coolant should not spray out of any cylinder. Your 92 Civic has a breach
>> of the cooling system, permitting coolant to cross an engine head gasket,
>> head, or block boundary and get into the cylinders. Head gasket failure is
>> far more likely than a head or block failure.
>>
> I'm guessing there is a warp of the head in conjunction with the bad gasket,
> but the fix is basically the same either way: the head has to come off, be
> checked and/or milled for flatness,

my position on head recovery is that if you have the luxury of doing the
job yourself, you get to choose what happens as a repair route. milling
it is not necessarily a good thing, and in my experience*, is sometimes
downright destructive for an aluminum head. the #1 thing is to *CHECK*
the head. if flat, re-use as-is [after cleaning up of course]. if
*slightly* warped, also check the block. if the two are "warped in
sympathy", do not mill the head! or at least, not if they're both
within the same ballpark of each other. flatness is easy to check with
a metal spirit level as a straight edge and feeler gauges to measure any
distortion.

* aluminum castings like this gouge easily. depending on the milling
[skimming] operation and the tool used, a cutting edge can pick up a
piece of material in the casting, but instead of slicing through it,
push it all the way along the surface plowing out an increasingly deep
furrow as it goes. and these things can be real deep too. [no gasket
is going to seal for very long after that.] the cutting operation needs
to be high quality and appropriate to the material, leaving it with a
fine smooth surface. myth about "heads need a little roughness to
'bite' the gasket" are utter bunk. d.i.y. head finishing operations can
be done with a block of 6"x4" [or larger depending on your hand size]
x3/4" plate glass scrap and wet & dry paper. remarkable flatness can be
achieved with a little patience and a well distributed polishing
pattern. scrub thoroughly [with a scrubbing brush] with plenty of soapy
water at least twice to remove all traces of silicon carbide afterwards.

> and a new head gasket has to be fitted.
>
> As Elle indicates, it is not just a possibility any more. The spraying of
> coolant out one cylinder when another is pressurized is a positive
> indication.
>
> Mike
>
>
 >> Stay informed about: 92 Civic losing coolant and overheating 

jophus DeleteThis @gmail.com wrote:
Ok, what stood out most to
> me was that while performing the final 3 tests, coolant sprayed out of
> #4. What does this indicate? Thanks again. Paul

That indicates you found the problem. Bad head gasket.
MK
 >> Stay informed about: 92 Civic losing coolant and overheating 

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> Elle wrote:
> > A head gasket failure is more likely. The group seems to be
> > getting a lot of such failures due to the heat wave. Though
> > in this case, the person who sold you the car might have
> > known...
> >
> > Repair will cost around $500 to $1000 at a shop.
> >
> > Do not drive the car. If it overheats too much, the cost of
> > the repair will rise.
> >
> > <jophus RemoveThis @gmail.com> wrote
> > >I just bought a 92 Civic 1.5L with 193,000 miles. It runs
> > >great when
> > > the coolant level is full. However, after driving for
> > > about 30-40
> > > miles, it loses enough coolant to cause the engine to
> > > overheat. There
> > > is very slight evidence of white smoke exhaust, although
> > > it almost
> > > undetectable. When I start it, there is the smell of
> > > coolant that
> > > comes through the vents. I've replaced the thermostat,
> > > ECT sensor that
> > > goes to the fan, upper and lower radiator hoses, and the
> > > radiator is
> > > new. Does this indicate that I have a small crack
> > > somewhere in the
> > > cylinder head? I've always thought that a malfunction in
> > > the cylinder
> > > head would render an engine almost useless
> >
> > No, it just leaks either coolant into the cylinders or oil
> > into the cooling system, or both.
> >
> > Thus you can also check the appearance of the coolant (any
> > oil in it?) and oil (is it looking thick, like Wendy's
> > Frosty consistency?).
> >
> > > and since the engine is
> > > strong (when not overheating), I assumed the problem was
> > > somewhere
> > > else. If it is the cylinder head, which is the best route
> > > to take in
> > > purchasing a new head: brand new or remanufactured?
> > > Thanks. Paul
 >> Stay informed about: 92 Civic losing coolant and overheating