guys,, my prob ung honda Vti 96model namin palagi nag oover heat,, nauubos ung tubig sa radiator pro wala naman leaks..ano kaya prob?..san shop expert s mga honda?
Pa-check mo yung mga bypass hoses. Have someone rev the car while you watch the engine. Sometimes, nagiging obvious ang tagas when the engine is being revved...
Try to check ang reserved tank after mong mag long drive. napupuno ba ito? baka nagooverflow na ito kaya nauubosan ka ng tubig,or meron pin hole ang radiator kaay hindi mo napapansin ang butas kasi very hot water mist ang lumalabas dito kaya nageevaporate kaagad ito, try mong ipa overhaul ang radiator mo, kailangan walang bara sa dadaanan ng tubig sa radiator and check for leak,
try to check the radiotor cap, check mo kung brittle na yung seal and you can also try to clean yung butas na lalagyan ng tubig and coolant ng radiotor, use a flat phillips screw to scrape any solid grime dun sa butas basain mo ng konting tubig para medyo lumambot yung dumi na yun kung meron man.
same thing happend to me.lagi kong nilalagyan ng tubig, then mya mya nauubos din. first akala ko walang leak. try mo po punoin ng tubig, then try to look closely baka may konting leak, possible is ung hose or ung water pump. banda baba ng mga belts kung may tulo. in my case i found out that theres a small leak sa water pump which means sira na. so un lng pinalitan then nag ok na.
sabi mo lagi nag ooverheat at nauubusan ng tubig although walang obvious leak sa radiator?
kung madalas ka mag overheat, baka nasira na ang head gasket ng engine mo na nagiging sanhi ng pag halo ng tubig at langis. pag uminit ang makina, yung tubig mo mag evaporate kaya maaubos ang tubig kahit wala leak sa radiator.
to confirm this, fill up mo yung radiator mo then start the engine. run for a few mins lang then silipin mo yung tubig sa radiator kung mejo brownish at may oil streaks. kung meron, baka yung head gasket needs replacement.
check mo ulit mga hoses. pg wala kyo makita leak at okay naman mga components, i have to take yng suggestion ni sir fourtheboys96. ganyan din kse symptoms ng kotse namin dati. my leak n pla yng gasket sa head. this may also cause white smoke sa exhaust kse humahalo n yng tubig sa oil and bka pumapasok n sa cylinders. have ur piston rings checked na din.
if possible pcheck nyo n din yng flow ng head. minsan kse ndun nmn yng leak o kya may bara....
open the radiator cap while the engine is cold. start the engine and see if the water jumpsa out while you rev the car. if it does then you need a top overhaul.
Before doing anything drastic...check first the following:
1. Ensure both inlet and outlet hoses are ok. Change it if necessary.
2. Ensure that the drain plug is not leaking.
3. Ensure that the Radiator cap is working properly. Change it if necessary.
4. Observe the radiator nozzle for the Radiator Cap. I have heard a couple of leaks are found here. It is not evident when engine is cold. But once the radiator warms up, you might find one. Try soap solution bubble test.
5. Have you replaced your Water pump? They normally change this during timing belt replacement.
As what others have mentioned, observe how fast you get a 'high' temp. Is it predictable or is it erratic..meaning sometimes it happens..sometimes not.
na-experience ko yan once but not from a honda but from a ford, nung pina-check ko sa isang garage eh kailangan palitan ang water pump pero kung hindi naagapan eh bka daw pti head gasket maapektuhan.