blow by

[optimusp]

When I opened the engine oil cap of my toyota corolla 95 nag shower ang langis, wala namang usok na lumulabas sa tambutso, at maganda pa yung hatak. Blow by na kaya to? :confused:

[speedyfix]

umaandar ba yung engine nung binuksan mo yung oil cap? if so that would explain bakit sumabog yung langis. the engine is pressurized and opening the oil cap when the engine is running isn't a smart thing to do.

i think ok pa makina mo.

[theveed]

Ano ang sign ng blow-by btw?

[kilawind]

umu usok at may pressure na lumalabas pag pinul mo yong deep stick mo o pag binuksan mo yon oil cap mo may presure din at the same time /bye bye engine na :D

[sturbo]

mga pre, tatanong ko na rin. yung 96 xe ko ang lakas sa langis. pag nagdagdag ako ,usually 1 liter. i could see some oil sa paligid ng engine. ( pero hindi naman mga 1 liter ). i recently bought this car, it has 100+ K mileage but ok pa naman at wala akong complaints sa takbo.

is this what you call "pumping oil"? anyway, what i'd like to know is the cause. could it be the improper maintenance/driving habit of the former owner or just simple wear and tear ?

[kilawind]

ok ganito yon dalawang problema mo right know{a} kung tumutulo sa paligid it means meron seal na wear out posible suspect front mainseal ,rear mainseal or oilpan gasket subukan mo munang i fix yon mga leak see if ill go away,(b)hanapin mo ako o e pm mo ko kung meron parin.

[speedyfix]

if the engine is dry but kumakain ng oil then this means the piston rings are going kaput.

if may tulo, then have these fixed kasi in the long run mas mahal yung dagdag ka ng dagdag ng oil.

blow-by is when there is smoke comming out of the oil hole when the engine is running. compression testing is the easiest way to note if the engine is in good health or not.

[kilawind]

Originally posted by speedyfix
if the engine is dry but kumakain ng oil then this means the piston rings are going kaput.

if may tulo, then have these fixed kasi in the long run mas mahal yung dagdag ka ng dagdag ng oil.

blow-by is when there is smoke comming out of the oil hole when the engine is running. compression testing is the easiest way to note if the engine is in good health or not.

there are more possible cause kung bakit kumakain ng langingis ang makina valve seal is going bad ,pcv valve is not working properly if itong dalawa na to nangyayari at the same time or it could be one of them malamang magdadagdag ka nga ng oil every time it`s low.

[frt]

Check also the tail end of your exhaust...kung may langis na sa dulo...bad sign....blowby

[Rolandml]

Originally posted by kilawind
umu usok at may pressure na lumalabas pag pinul mo yong deep stick mo o pag binuksan mo yon oil cap mo may presure din at the same time /bye bye engine na :D

mga bossing does it mean pag me usok pag binuksan ang deep stick blowby na talaga and engine? kasi yung car ko binuksan ko and deep stick meron usok... using mazda b2200 .. speed nya naman ok pa and sa smoke test .98 lang siya... ano pang dapat check para malaman kung blowby na talaga ang engine? maraming salamat

[Ungas]

Rolandml::: One thing for sure, if you add one liter of oil per week. Loose compression state na.

Sign of wear ang usok sa dip stick entry & engine oil cap. There's the possibility that your engine will consume one liter of oil inbetween oil changes. Which is normal for a commonly used engine.

[boydapa]

rolandml>>>>>>>>>ako naman same problem din ewan ko kung ipapaoverhaul ko or change engine. problema ko sa overhaul palpak 2 beses na ako nagpa ayos napalaki pa tuloy gastos ko palit dyan palit dun hala sige palit ayos just to restore daw in excellent running condition sige naman ako after 6 months pucha pumupugak na makina ko, hirap umakyat, kumakadyot ang dami pa oil leaks. siguro kung sigurado ka na magaling yan nag ooverhaul sa oto mo---siguro propesor ng mechanical engineering o automotive engineering go for it pero kung yun mga mga nakatapos lang ng vocational or less palpak talaga gawa ng mga yan. overhauling from what i have read is a very complicated procedure dapat lahat precise ultimo down to the last detail, the clearances should be right down to thousands of an inch measurement. sa change engine the only thing you need to do is to be sure na ok yun engine na makukuha mo check for signs of overheating, oil leaks, gasket problems, compression etc. dami sa internet check mo yun tips(search ka lang ) you may use measurement tools if allowed etc.. kaya ko naman nasabi change nalang kasi ganun kasi nangyari sa transmission ko nung una nasira then tanong ko sa mga mekaniko magkano abutin 10,000++ good thing may nakapagsabi sakin na kung papaayos ko daw trans ko malamang di maibalik ng maayos yun mga rotating gears sa loob so sira din dahil naexperience na ng frend ko yun. ginawa ko change trans nlang ako buti nalang yun trans na binigay sakin sariwa talaga as in binuksan lahat kita ko hangang sa pinakamaliit na washer at conditions ng mga gears. so yun 4 yrs nato trans ko no problems naman think about it.

[jim]

It's but normal that when you pull the dip stick or open the oil cap of your engine while running idle may konting pressure at tatalsik ang oil. Compression test is the best way to determine if yung engine eh blowby na. Also check your air intake valves. If there's oil there then blowby ang engine. Here's a link that might help understand what blowby means:

http://www.bobistheoilguy.com/blowby.html

[afrasay]

Originally posted by boydapa
siguro kung sigurado ka na magaling yan nag ooverhaul sa oto mo---siguro propesor ng mechanical engineering o automotive engineering go for it pero kung yun mga mga nakatapos lang ng vocational or less palpak talaga gawa ng mga yan.

I beg to disagree. My cousin (Ferdie) is a diesel mechanic vocational graduate. And he has overhauled more than a couple of engines (gas and diesel) and transmissions (auto and manual) with little or no backjob to his name.. I think what is important is that your mechanic has a grasp of the basic principles of what he is doing. Yes, being a mechanical/automotive engineer has its advantages, but do you think they do the actual job. At the end of the day, it is the typical mechanico that do the job. I guess it boils down to experience and knowledge and knowing when not to tinker with something that you have no experience of. The usual backjob of newly overhaul engines are overzealous owners who fail to to follow "break-in" driving procedures. my two cent...

[afrasay]

Originally posted by boydapa
siguro kung sigurado ka na magaling yan nag ooverhaul sa oto mo---siguro propesor ng mechanical engineering o automotive engineering go for it pero kung yun mga mga nakatapos lang ng vocational or less palpak talaga gawa ng mga yan.

I beg to disagree. My cousin (Ferdie) is a diesel mechanic vocational graduate. And he has overhauled more than a couple of engines (gas and diesel) and transmissions (auto and manual) with little or no backjob to his name.. I think what is important is that your mechanic has a grasp of the basic principles of what he is doing. Yes, being a mechanical/automotive engineer has its advantages, but do you think they do the actual job. At the end of the day, it is the typical mechanico that do the job. I guess it boils down to experience and knowledge and knowing when not to tinker with something that you have no experience of. The usual backjob of newly overhaul engines are overzealous owners who fail to to follow "break-in" driving procedures. my two cent...

[jim]

Additional info. Oftentimes blowby is caused by defective PCV (Positive Crankcase Ventilation) valve. Check the valve first before you decide to overhaul your engine. THis is the usual cause of blowby wherein blowby gases tend to find other outlets to escape the engine. For additional info on PCV visit this url:

http://www.autotune.com/cprotest/cpc8c.html