yesterday pretty hot here in melb well not as hot as today. Anyway, we went out for while in GV and I put the AC in full. After a while the car suddenly died but it was restarted straight away.
This morning I found that it is missing around 1.8l including from the coolant reservoir. I couldnt find any leak as I filled it up and it is fine after I filled it up.
Any idea where 1.8l water gone??
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Missing water in radiator
Did you test for leaks with it running and while warm and while warm and not running? I'm betting it's a leak from a hose cause sometimes they seal back up when not under pressure and other times it's on the suction side they only leak when the engine is stopped.
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could of squirted out the overflow
or radiator
or hoses
or waterpump
or heater core
or head gasket
or welsh plugs
or radiator cap
or thermistat houseing
or block
or head
or a 100 other places.
pressure test it hot, pressure test it cold and pressure test it whilst running.
could of had an airpocket in cooling system and getting it nice and hot has bled it out but this is only likely if you have had the cooling system apart recently.
if you cant see a leak it generally means its using it.
or radiator
or hoses
or waterpump
or heater core
or head gasket
or welsh plugs
or radiator cap
or thermistat houseing
or block
or head
or a 100 other places.
pressure test it hot, pressure test it cold and pressure test it whilst running.
could of had an airpocket in cooling system and getting it nice and hot has bled it out but this is only likely if you have had the cooling system apart recently.
if you cant see a leak it generally means its using it.
Last edited by Jacked on Tue Dec 23, 2008 9:05 am, edited 1 time in total.
As the vehicle is stil operating I doubt he will find it in the sump.Zute wrote:have you checked in the sump ?
Change your raditor cap, most likey yours is leaking and not holding enough pressure.
" If governments are involved in the covering up the knowledge of aliens, Then they are doing a much better job of it than they do of everything else "
found the coolant reservoir is empty again today. Filled it up n went out to the shop. Checked the coolant in the carpark still there. Went home and checked the coolant still there.
waited few hours n checked again n noticed the coolant in reservoir has dropped quite significantly.
So there must be a leak when engine stop ie when no pressure. I am suspecting radiator cap. How do you actually chech whether the cap is still good or not?
waited few hours n checked again n noticed the coolant in reservoir has dropped quite significantly.
So there must be a leak when engine stop ie when no pressure. I am suspecting radiator cap. How do you actually chech whether the cap is still good or not?
A cap is pretty cheap and should be replaced every so often anyway .. I would get a new one and see how you go.dearot wrote:found the coolant reservoir is empty again today. Filled it up n went out to the shop. Checked the coolant in the carpark still there. Went home and checked the coolant still there.
waited few hours n checked again n noticed the coolant in reservoir has dropped quite significantly.
So there must be a leak when engine stop ie when no pressure. I am suspecting radiator cap. How do you actually chech whether the cap is still good or not?
" If governments are involved in the covering up the knowledge of aliens, Then they are doing a much better job of it than they do of everything else "
A radiator cap is usually the highest part of a cooling system so chances are it's not leaking out of there when it's not running. I would suspect a hose on the inlet (negative pressure) side of the water pump. Failing that I would check your head gasket (check for milky oil).dearot wrote:found the coolant reservoir is empty again today. Filled it up n went out to the shop. Checked the coolant in the carpark still there. Went home and checked the coolant still there.
waited few hours n checked again n noticed the coolant in reservoir has dropped quite significantly.
So there must be a leak when engine stop ie when no pressure. I am suspecting radiator cap. How do you actually chech whether the cap is still good or not?
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Water boils at higher temps when under pressure, so if the cap is faulty releasing pressure there is a chance it is boiling off. But if there is absolutely no traces of water around the engine bay or ground I would think it is leaking into the oil or combustion chamber via the head gasket.dearot wrote:yes and i could not find anything.
if the radiator cap is faulty how the water goes out? as I couldnt find any trace of water around it. Unless it goes as a steam thats why it is losing water after the engine stop and slowly losing water.
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I checked the dipstik n oil seems fine and the level not goes up as i lost alot of water. i also checked the oil filler cap and look inside it n it seems fine too.GRPABT1 wrote:A radiator cap is usually the highest part of a cooling system so chances are it's not leaking out of there when it's not running. I would suspect a hose on the inlet (negative pressure) side of the water pump. Failing that I would check your head gasket (check for milky oil).dearot wrote:found the coolant reservoir is empty again today. Filled it up n went out to the shop. Checked the coolant in the carpark still there. Went home and checked the coolant still there.
waited few hours n checked again n noticed the coolant in reservoir has dropped quite significantly.
So there must be a leak when engine stop ie when no pressure. I am suspecting radiator cap. How do you actually chech whether the cap is still good or not?
its the fan for cooling the radiator , if it spins freely when the engine is at rest , the fluid inside has lost its viscosity. because it cant efficiently cool the radiator , the radiator will push more water out than it can recover , hence a mysterious water loss .
just an idea as it has been one of the problems with mysterious water losses in the past.
just an idea as it has been one of the problems with mysterious water losses in the past.
Interesting. "when the engine at rest", do u mean when the engine on idle or engine stop?suzimad wrote:its the fan for cooling the radiator , if it spins freely when the engine is at rest , the fluid inside has lost its viscosity. because it cant efficiently cool the radiator , the radiator will push more water out than it can recover , hence a mysterious water loss .
just an idea as it has been one of the problems with mysterious water losses in the past.
If the fluid has lost its viscosity, should I just add more coolant (concentrate) or I need to flush the cooling system?
Where does the water go?
I am hoping this whats happening not internal leaking.
Noones mentiuoned it yet, so I thought I would. After you've been on a drive and the engines nice and warm, get out and have a look at the exhaust pipe while the engine is still running. If you see it dripping any water at all, it could indicate a possible hairline crack letting water into the combustion chambers. It does'nt necassarily have to run rough, it depends on how much water is getting into the chambers
have you had a pressure tester put on it ??? if not your really just wasting your time, it could be leaking in three spots under pressure but you won't see them without one might find just the big one.
besides it will give you a true indication of weather your system is holding pressure.if it wont hold pressure it WILL boil.
ps dont put leak sealer into your system as others have said its bad shit and clogs stuff up like cooling passages in radiatiors etc , find the cause first.
when I have my panel shop we used to pressure test ever car we touched the cooling system on,you'd be suprised how many cars have minor leaks , ie lose hose, pinhole in hose ,bad o ring ,bad cap etc might have been a minor leak but they get worse quickly and cost you a head in the long run.
besides it will give you a true indication of weather your system is holding pressure.if it wont hold pressure it WILL boil.
ps dont put leak sealer into your system as others have said its bad shit and clogs stuff up like cooling passages in radiatiors etc , find the cause first.
when I have my panel shop we used to pressure test ever car we touched the cooling system on,you'd be suprised how many cars have minor leaks , ie lose hose, pinhole in hose ,bad o ring ,bad cap etc might have been a minor leak but they get worse quickly and cost you a head in the long run.
Last edited by ajsr on Wed Dec 24, 2008 8:47 am, edited 1 time in total.
85 high roof 1.3, 6.5 tc, air lockers,ruf and 34 swampers. yep its an ugly pos.
my zuk always uses heaps of water in summer... i've got no leaks of any kind at all - but under my engine bay gets DAM hot and it simply evaporates from the resovior bottle. I just keep it topped up and its fine - it only really uses a whole heap on a really hot day or if im doing a lot of crawling (higher engine temps).
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