Loss of water in radiator but no overheating

[saadahmad.shaikh]

I have got honda city exi 2000. The radiator reduces water and need to be filled about half a liter after every two days. There is also thermostat installed in the car. The car never gets overheated and there is no visible leakage from hose pipes or radiator.

The water in the radiator does not have bubbles, there is no oil in radiator and the engine oil is also fine with no whitish milky stuff.
I am really confused what is the reason for significant loss of water so frequently.

P.S: there is some strange colorless smoke or weird sound from the exhaust

[moizadil]

Probably some leaks around the gasket which leads to water being burned in the cylinders and water also evaporates at quite a low temp as compared to coolant so that could be a reason too.

[saadahmad.shaikh]

gasket has been replaced 8 months ago and the car was never over heated during that time as i always ensure that water or coolant level in radiator is maintained...

[hassantahir2]

Pour in some cheap coolant to trace the leak there would be some leak in the pipes, water pump, radiator.
Also check the radiator cap and replace if necessary.

[saadahmad.shaikh]

there is some smoke from exhaust as well although not much

[mehsanjunaid]

Is your fan direct or automatic??

[saadahmad.shaikh]

automatic

[margallar]

its probably a bad headgasket. You should get a compression test. It might sieze the engine

[saadahmad.shaikh]

head gasket things have been checked e.g. no mixing of oil and water, no bubbles or oil in radiator etc. I think the radiator cap that I am currently using is not of the correct bar pressure.. I am thinking to use a 1.1 bar pressure one.. currently using 0.9 one

[Tabish1]

head gasket things have been checked e.g. no mixing of oil and water, no bubbles or oil in radiator etc. I think the radiator cap that I am currently using is not of the correct bar pressure.. I am thinking to use a 1.1 bar pressure one.. currently using 0.9 one

All these signs arrived when your gasket is in very bad condition. but remember minor puncture in head gasket can never be diagnosed using these methods..

Is your car droping water in cold starting ?

[saadahmad.shaikh]

the head gasket and water body had been replaced 8 months ago and the car had never been heated up since then. Further, there is also thermostate valve installed and the temp needle never go above 45% mark... this water dropping issue is recently being faced due to extreme weather in Karachi... I have a daily drive of 40km and when the next day I check the radiator, atleast 100 ml of water is lost

[farhad5]

Same thing happened to my old BMW I later found the overflow bottle leaking please use colour coolant and check

[mywasim2000]

Kiya problem solve hoe . or kiya diagnose howa