HELP:Coolant Reservoir drying up fast

[Elfenstar]

rad has been checked. cap has been changed. no visible leaks. its time to get a flush done as well as a leakdown test to make sure its not leaking internally.

[Rk98]

tell u what... sunday u come to kai motor in ubi... the mechanic there is able to advise you on your situation.

[Chucky2007]

Hi,

My exisiting pressure cap is 0.9, my mechanic recommend that i change to a new cap at 1.1 because my mileage is above 80000km goin 90k. is that necessary? would changing to a higher pressure cap create possibility of engine overheating easier since the pressure cap can withstand higher pressure now?

[Yeobh]

My fear is the leak is internal - either the coolant is getting into the combustion chambers or lubrication system via cyinder head gasket or hairline cracks in the engine block or cylinder head. Visual inspection on the exhaust, lub oil or coolant may be possible to confirm that there is internal leak (s) but the question is where is the source. Unless the mechanics doing the diagnossis has the knowledge of doing a leak down test if not the chance he will he will be chasing wild goose.

[Yeobh]

By using cap with higher pressure setting. it means that your coolant boiling point will be at high temp. It is good if you coolant system is in good working order.

[Vidz]

but if the cooling system is suspected to be faulty, (drying up of reserve), then its killing the system faster...

[Yeobh]

Yes if excessive water get into the lub system , the lub will becomes less effective.If too much get into the cylinders , the piston(s) will be compressing water ( liquid cannot be compressed) in the events mechanical failure will follow - resulting in bend con-rods, damaged piston head & etc.

[Dennisk]

here are some pics...

 

i have changed the coolant and flushed it yesterday, just now when i came back i open the bonnet and realised the coolant level drop again . here are some pics.....advise pls...

 

coolant spill can be found at the botton of the "plastic tray"

Edited October 18, 2007 by Dennisk

[Dennisk]

can recommend me some workshop? i think this matter cannot be delay.....

[Dennisk]

tell u what... sunday u come to kai motor in ubi... the mechanic there is able to advise you on your situation.

ok...i just afraid that it will get worse ...

[Kyojin]

coolant level should drop after a flush. there'll be air spaces in the system and when the coolant replaces the air, the coolant level will drop naturally.

 

but you shouldn't see any leaks... i see your radiator cap is aftermarket 1.1bar? is that the correct spec for your car?

[Yeobh]

Have just pm you. Hope the problem can be resolve soon.

[Yeobh]

If you are refilling coolant into engine especially those in european cars with aerodynamic front - air bubbles if not 100% removed with a specially designed vacuum gun, can creat alot of long term cooling and driveability problems.

[Dennisk]

correct spec, stock also using 1.1 bar...