Blow by!!!

**rolla89** · October 18th, 2009 08:48 AM

Nwebie here. just bought a corolla gl 1.6 ae92 90 mdl from a friend. when i showed it to another friend he opened the engine oil cap while the engine is running and pressed his palm over the oil inlet mouth to test daw if the engine is still good. sad to say, droplets of oil manifested in his palm and he said the engine is having a "blow by" at hindi na daw magtatagal. how is this true mga guru eh maganda at pino pa naman manakbo ang oto. dapat daw hindo tumatalsik ang langis pag binuksan ang bibig ng makina....request advice here. thank you sirs...

**niky** · October 18th, 2009 09:53 AM

Oil will naturally come up... what you need to see is how strong it is... if there's pressure under the cap, that means air from the cylinder is entering the oil system... which indicates blow-by.

A more accurate test would be a compression or leakdown test to assess how well sealed your piston rings still are.

**emms1121** · October 18th, 2009 12:38 PM

Tama si Nicky. Oil will naturally come out specially for that model. Meron din ako ganyan sasakyan before. Bago ko binili may kasama akong mekaniko at binuksan din nya oil cap habang tumatakbo. Tumalsik langis. Ang dapat daw tingnan ay kung may usok lumalabas sa oil cap.

**boy_tino** · October 18th, 2009 01:31 PM

para mas madali kung blow by na hugutin mo ang dipstick mo kung kapapatay pa lang ng makina mo or umaandar, sa suksukan ng dipstick kapag may lumalabas na usok dun asahan mo na yun at lalo na yun mismong dipstick mo ay may moist na at i check mo na rin PCV valve mo kung malangis at mausok na rin ito.

pero ang pinaka sigurado sa lahat ay compression test kasi dun masusukat kung gaano kalakas ang compression ng combustion chamber ng makina mo

**rolla89** · October 18th, 2009 03:40 PM

Thanks for the infos sirs...subukan ko tingnan yung sa dipstick kung mausok sya pero sa oil cap hindi naman sya mausok pero malakas talagatalsik ng langis as in kung takpan mo syan ng palm mo e mababasa eto sa langis. ill try aslo the comp test thing. hope hindi malala sakit nya. eh kung blow by nga talaga sakit nya mga magkano kaya magastos ko sa pa repair? ibaba ba ang engine nun? thanks again for the feedbacks sirs...by the way taga tarlac pala ako...

**bambino** · October 18th, 2009 10:17 PM

pwede rin i test yan through battery readings ,called electronic relative compression test . and it only takes a few minutes to assess the engine mechanical.

**Excalibur** · October 19th, 2009 12:06 AM

Where and for how much is this compression test?

**boy_tino** · October 22nd, 2009 04:07 PM

Originally Posted by Excalibur

Where and for how much is this compression test?

nung last year nang nagpa change oil ako doon sa speedyfix ni-quote ako ng 300 pesos ewan ko lang ngayon kung magkano

visit mo na lang ang site nila www.speedyfixph.com at tawagan mo rin sila para magtanong kung magkano.

**technismo** · October 22nd, 2009 08:31 PM

check the pcv system

**ExROLLA** · October 23rd, 2009 04:50 PM

Originally Posted by technismo

check the pcv system

[SIZE=4]+1... check first your PCV system if it needs to be replaced... had an "affair" with a corolla 90 for ten years... one time, i noticed oil in the air filter and air pressure with white smoke coming out of the hose connecting from the valve cover to the air filter... consulted a mechanic... the immediate judgement: "blow by" na ang engine mo sir!![/SIZE]
[SIZE=4]i was not convince because the car was running good - - no black emission and relatively good fuel consumption... read in another forum about this PCV system... had my PCValve replaced and problem solved...[/SIZE]