Coolant disappearing

[Charmaine12]

 

Just check the engine oil if its milky

 

then good news its not disapprearing,

 

its just going into the engine.

 

Your workshop is very good you always go there.

 

Try to find a bad work shop that you never go to.

 

Dont get what you mean.

Pressure test dont show internal leak.

 

I hope its not main gasket leak.. the amount cost to repair is too high. And my car nvr suffered overheat before.

[Jamesc]

Dont get what you mean.

Pressure test dont show internal leak.

 

I hope its not main gasket leak.. the amount cost to repair is too high. And my car nvr suffered overheat before.

 

Its very simple.

 

Coolant flows within your engine to cool the engine.

 

Sometimes there is an internal leak so it flows into the oil.

 

That means your coolant is not disapprearing but actually

 

mixing with your engine oil which it shouldn't.

 

The way to check this is to see if the engine oil has coolant

 

mixed with it. If your oil is milky colour then thats where

 

coolant is flowing to and not disappearing.

 

[Jamesc]

Dont get what you mean.

Pressure test dont show internal leak.

 

I hope its not main gasket leak.. the amount cost to repair is too high. And my car nvr suffered overheat before.

 

The other way is rev your engine and check your tail pipe

 

If you see white smoke then the coolant is flowing into your engine.

 

The white smoke is the coolant being burned off.

 

[Yeobh]

Dont get what you mean.

Pressure test dont show internal leak.

 

I hope its not main gasket leak.. the amount cost to repair is too high. And my car nvr suffered overheat before.

 

Normally internal leakage due to cylinder head gasket or O ring seal failure will come into action only when engine is running hot. Carrying out pressure test ( try to over pressure t he system by 10% more than the cap rating pressure) then run the engine to allow coolant to reach operating temp. If the gauge pressure drop that means there is internal leak.

Alternatively , your mech can use a cylinder leak down tester to identify the fault source location.

Leak down tester uses workshop compressed air which is introduced in to the cylinder ( the cylinder under test will have to be set at Top Dead Centre ). The test is repeat on all cylinders.

Hope this helps

Edited November 20, 2014 by Yeobh

[Charmaine12]

 

Normally internal leakage due to cylinder head gasket or O ring seal failure will come into action only when engine is running hot. Carrying out pressure test ( try to over pressure t he system by 10% more than the cap rating pressure) then run the engine to allow coolant to reach operating temp. If the gauge pressure drop that means there is internal leak.

Alternatively , your mech can use a cylinder leak down tester to identify the fault source location.

Leak down tester uses workshop compressed air which is introduced in to the cylinder ( the cylinder under test will have to be set at Top Dead Centre ). The test is repeat on all cylinders.

Hope this helps

Which workshop have such tools. Those i went only use eye power nia

[Jimmy_hayashi]

Which workshop have such tools. Those i went only use eye power nia

Gary engineering at ubi has such tools cos i send.in for coolant repair too

[Tigershark1976]

leakage could be anywhere frm rubber hose, radiator or worst scenario, leak thru head gasket.

 

 

leak thru Rubber hose, or clip : check for sign of coolant, or coolant stain. coolant could be orange, red or green. its very different from other liquid so its quite easy to spot. Sometimes when the leak is very small, you wont find the liquid, but you will find the stain. Coolant stain is usually white. sometime the stain could be quite obvious. Depends on where the leak is

 

leak thru Radiator: check for the same sign as above.

 

Leak thru Head gasket: this is simple t check. Check your coolant tank/ reservoir, any oil film or stain? open your engine oil cap, any "sludge" look alike stuff in the engine or engine oil cap? oil mix with water = sludge, . If you found either sign... quickly bring it to workshop to confirm... coolant leak into engine head gasket could cause serious damage to your engine. If it is recover early, a few oil flush and replacing the head gasket could solve the problem....otherwise, good luck.

 

 

[chooyaochuen]

normally is radiator leaking. depending on the severity of the leak, sometimes, can have few points of leakage, you may decide whether to replace the whole radiator or just patch up the leak.

alternatively, keep up filling up water daily:)

[Charmaine12]

Just send my car to spc servicing ctr for another opinion before to tan chong.

 

Tan chong quoted me 1300 bucks for header gasket change. That is simply crazy..

[Matrix0405]

 

seriously your workshop is unprofessional.

 

a pressure test is all it takes to know where the leaks come from.

 

unless they dont have it then......

 

 

Agree with this one. This trial and error method is not the right way to solve the problem.

Anyway, are pressure meters available from online shop? Shouldn't be too expensive as it works like a foot pump.

 

BTW, how old is your car?

Edited November 24, 2014 by Matrix0405

[Charmaine12]

My latio is 5 yrs plus.

 

Diagnostic from spc. He said that the coolant pipe to aircon heater maybe the culprit. He plugged out and see if the problem settle.

 

Will have to monitor again.

 

Just to check.. how come coolant pipe to aircon ?

[Jman888]

My latio is 5 yrs plus.

 

Diagnostic from spc. He said that the coolant pipe to aircon heater maybe the culprit. He plugged out and see if the problem settle.

 

Will have to monitor again.

 

Just to check.. how come coolant pipe to aircon ?

 

 

to cool if you turn the aircon to heater.

[Adrianli]

My latio is 5 yrs plus.

 

Diagnostic from spc. He said that the coolant pipe to aircon heater maybe the culprit. He plugged out and see if the problem settle.

 

Will have to monitor again.

 

Just to check.. how come coolant pipe to aircon ?

 

There are two to three radiator in the car. One for engine and one for aircon. So coolant is needed to pass thru the aircon radiator to cool the refrigerant gas.

 

[Dalenico]

My latio is 5 yrs plus.

 

Diagnostic from spc. He said that the coolant pipe to aircon heater maybe the culprit. He plugged out and see if the problem settle.

 

Will have to monitor again.

 

Just to check.. how come coolant pipe to aircon ?

Hot Coolant provides the heat to air con heater via the pipe to provide the heat when switched to heater mode. Useful in climate countries doubt you would ever use it here. If the heater core is the culprit, just do a bypass.

[Yeobh]

 

 

Agree with this one. This trial and error method is not the right way to solve the problem.

Anyway, are pressure meters available from online shop? Shouldn't be too expensive as it works like a foot pump.

 

BTW, how old is your car?

 

The hand pressure pump is a simple set up and therefore the cost is not very high. The real cost of the coolant pressure set is the radiator and cap adaptors , there are more than 11 sizes and configurations covering European and Asia cars ( light and heavy trucks not included ).

Some deluxe car coolant pressure tester set can cost as must as s$750.00 per set.

[Yeobh]

 

 

Agree with this one. This trial and error method is not the right way to solve the problem.

Anyway, are pressure meters available from online shop? Shouldn't be too expensive as it works like a foot pump.

 

BTW, how old is your car?

Of the 1,000+ car workshops in Singapore , I reckon not more than 20% have the coolant pressure tester.

 

Edited November 24, 2014 by Yeobh

[Wildfaye29]

Of the 1,000+ car workshops in Singapore , I reckon not more than 20% have the coolant pressure tester.

 

 

I have a similar problem. Can you recommend a workshop with the tools to check on this please?

[Fuelsaver]

Of the 1,000+ car workshops in Singapore , I reckon not more than 20% have the coolant pressure tester.

 

Based on ur many replies, think many ws don't have a lotsa tools. They mostly use experience n eye power. Common specialized equipment r only diagnostic reader, AC machine, batt tester.