Thick white smoke during cold start?

[per]

Hello,

meron po ako 2001 Rav4. may lumalabas na thick white smoke every 1st start and 1st 10 seconds of idle ng engine.
Parang burned oil ang amoy at makapal na usok.
Pero after 10 seconds ok na,wala na usok kahit patayin ko pa then start uli after several hours ok na.
Pero once gamitin ko sya the whole day, ganun nanaman kinabukasan pag start ko uli usok nanaman
Anyone encountered the same problem?

[monsrick]

For gasoline car IMO is normal coz cold start nga po,malamig pa engine and pag uminit na eventually wala na rin yung smoke.Black smoke naman po kasi for diesel if may problem.

[per]

For gasoline car IMO is normal coz cold start nga po,malamig pa engine and pag uminit na eventually wala na rin yung smoke.Black smoke naman po kasi for diesel if may problem.

i think you are referring to water vapor. yun din akala ko nung una pero un sakin iba, un parang blow by engine sya pag bumuga parang pugon eh

[4JGtootsie]

Its possible that oil can enter the combustion chamber at starts ups because walang pang heat and pressure to push the piston rings against the cylinder walls. Parang what happens to firecrackers pag suppot. While the engine gets older a tight seal loosens and eventuially leads to blow by. Remember also that cold engine burns richer fuel to attain NOT then leans when it does.

[karlbo]

this is just normal for morning start ups for the engine...
no problem at all..

* monsricks black smoke for diesel engines are normal too.. wag lang yung bluish white na usok, medyo hindi na maganda yun..

[speedyfix]

check the pcv... it could be that.

[mm15744]

Mga Guru, yung kotse ko GLI bigbody 93 model, ganito naman ang observation ko: Pag start sa umaga, magtutubig ang tambutso tapos white na vapos ang nalabas pero pag medyo mainit na mawawala, as in wala kang makikitang kahit anong usok. Pero pag ni-rev mo yung engine lalabas ang usok kulay blue. habang nirerelease nawawala naman. nangyayari lang pag nirerev ng malakas. Ano po kayang problem nito, di naman po basa ang spark plug. May nagsabi sa akin idrain ko daw yung gas tank then saka mag pa gas ng bago. Please advise po.

[notEworthy27]

this is just normal for morning start ups for the engine...
no problem at all..

* monsricks black smoke for diesel engines are normal too.. wag lang yung bluish white na usok, medyo hindi na maganda yun..

pag blusih white smoke anong ibig sabihin nun?

[per]

check the pcv... it could be that.

Thanks sa reply ano po un PCV san ito makikita?

[speedyfix]

bluish smoke means burning oil. could be a busted valve seal or worse piston rings na busted na.

[sunpower]

Mga Sir, konting tulong lng po ksi ung sa galant gti ko sobra nmang usok kpag bgong andar mas mausok p nga sa jeep nmin n diesel, pero kpag ung temp. nya eh klahati n sa gauge eh nawawala n po usok nya ano kya po problema....... salamat.

[v6dreamer]

Mga Guru, yung kotse ko GLI bigbody 93 model, ganito naman ang observation ko: Pag start sa umaga, magtutubig ang tambutso tapos white na vapos ang nalabas pero pag medyo mainit na mawawala, as in wala kang makikitang kahit anong usok. Pero pag ni-rev mo yung engine lalabas ang usok kulay blue. habang nirerelease nawawala naman. nangyayari lang pag nirerev ng malakas. Ano po kayang problem nito, di naman po basa ang spark plug. May nagsabi sa akin idrain ko daw yung gas tank then saka mag pa gas ng bago. Please advise po.

Baloney!
Well, not a bad idea also to drain and clean the gas tank to remove water or any other residue that accumilated in time that caused harmful to engine. Anyway, water from the tailpipe is a normal condition. One of the byproducts of the catalytic converter process is, transforming harmful vapors into.....not so harmful vapors. One of those is water vapor, the vapor will condense on the exhaust pipe walls and accumulate inside it. If you notice, there is a hole in the bottom of the muffler to allow the trapped water to escape and it will also drip from your tailpipe once you start your car.

[Howard Roark]

white smoke = condensate that is accumulated in the exhaust that vaporizes again once hot air flows through. I think this happens because the engine cools slower thus cold air move thru the exhaust system thru convection. During the process, some water vapor is trapped inside the exhaust system and then expelled when the engine is running. Just my opinion