You'd need a cooling system pressure tester:
You make sure the cooling system is full, start the car until it warms up,
then pump the pressure tester to 15Lbs. Let it keep running. If it goes
over
the red zone on the gauge, you have a head or head gasket problem.
Although, it's not that easy, a bad thermostat can make the pressure build
up quickly and go high.
RK
"StarMan" <NOSPAM@[EMAIL PROTECTED]
> wrote in message
news:CpyRi.7928$m8.667@[EMAIL PROTECTED]
> Right, which I understand.
>
> But how can I tell if there's any problem with the HEAD?
>
>
>
>
> "Refinish King" <Julio572004@[EMAIL PROTECTED]
> wrote in message
> news:%nwRi.8112$hI1.390@[EMAIL PROTECTED]
>> Hi:
>>
>> The weep hole is part way in the pulley, so the water will run back,
down
>> the body of the pump.
>>
>> I hope this helps.
>>
>> RK
>> "StarMan" <NOSPAM@[EMAIL PROTECTED]
> wrote in message
>> news:V9iRi.5142$5c.789@[EMAIL PROTECTED]
>> > Hello and thanks
>> >
>> > As far as I can tell, the water is actually leaking RIGHT OUT of the
> water
>> > pump (I need to look at the diagram again to ensure I have it ID'd
>> > right
>> > but
>> > I'm pretty sure). I can't tell if it's coming out of a weep hole or
> not,
>> > but the water I add, when it gets full, seems to pour right out of
the
>> > water
>> > pump, where it connects with the engine, drips down onto the main
drive
>> > wheel which drives the belt, then onto the ground.
>> >
>> > When you say "head gasket" or "cracked head", I confess to getting
>> > concerned. But how would I tell if it's the carbon seal of the water
> pump
>> > or something much worse?
>> >
>> > As I mentioned, the water drips out when the rad gets filled but I
>> > can't
>> > ID
>> > just where.
>> >
>> > I can't see where any of the hoses are leaking, when I've looked
> further.
>> >
>> >
>> >
>> >
>> > "Refinish King" <Julio572004@[EMAIL PROTECTED]
> wrote in message
>> > news:zvcRi.4242$2h2.1511@[EMAIL PROTECTED]
>> >> Hi:
>> >>
>> >> The temperature fluctuating from 300 to 260 degrees is more than
>> >> likely
>> > the
>> >> thermostat.
>> >>
>> >> Alternatively, if your heater core isn't plugged. You have
combustion
>> >> leaking from a head gasket or a cracked head, leaking into the
cooling
>> >> system.
>> >>
>> >> Causing a cool air bubble in the heater core.
>> >>
>> >> The water pump, is most likely leaking from the lower weep hole. The
> hole
>> > is
>> >> there so when the carbon seal deteriorates, the coolant leaks
through
> the
>> >> hole, rather than pissing through the bearing.
>> >>
>> >> I hope this helps.
>> >>
>> >> RK
>> >> "StarMan" <NOSPAM@[EMAIL PROTECTED]
> wrote in message
>> >> news:0z%Qi.4168$E7.3896@[EMAIL PROTECTED]
>> >> > My Z28 has a bit of a leak in the coolant system.
>> >> >
>> >> > However before this particular leak began, I've had problems with
my
>> > heat.
>> >> > Namely, I don't HAVE much. Being from a warm climate, I haven't
>> >> > worried
>> >> > much about that alone.
>> >> >
>> >> > Now, however, I find my temp will suddenly skyrocket to 260, but
>> >> > then
>> > fall
>> >> > to 200 suddenly.
>> >> >
>> >> > When I replaced my belt, I saw what looked like a "wet" water pump
> down
>> >> > below.
>> >> >
>> >> > I have yet to get under to see just where the current leak is.
>> >> >
>> >> >
>> >> > Anyway - any ideas if this sound s like just a HOSE? Or is my
water
>> > pump
>> >> > suspect? I wonder about the pump, since the temp shoots up then
in
>> >> > a
>> > few
>> >> > seconds goes down 50 deg or more. Maybe a pump failing? Also
>> >> > there's
>> > the
>> >> > lack of HEAT inside the car.
>> >> >
>> >> > I know I need to replace a hose, since when I put in water to the
>> >> > radiator,
>> >> > it poured out once I filled it. The question is - is there enough
>> >> > evidence
>> >> > to go ahead and replace the water pump?
>> >> >
>> >> >
>> >>
>> >>
>> >
>> >
>>
>>
>
>
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