Squeeking hissing sound - start up

[Icis]

Fellow forumers, I would like to ask some help.

I have a 96 bilog lancer that was just changed oil last month. I noticed that upon startup morning may hissing squeeking sound that may come from the engine (guess only). After revving up the motor for 2 to 3 minutes ok na po and walang nang abnormal sound noise. During driving eh ok din naman.

Problem:
Abnormal squeeking hissing sound start up


I'm pretty sure hindi po sa brakes kasi di pa umi ikot ang gulong.




Thanks in advance!

[jick.cejoco]

Fellow forumers, I would like to ask some help.

I have a 96 bilog lancer that was just changed oil last month. I noticed that upon startup morning may hissing squeeking sound that may come from the engine (guess only). After revving up the motor for 2 to 3 minutes ok na po and walang nang abnormal sound noise. During driving eh ok din naman.

Problem:
Abnormal squeeking hissing sound start up


I'm pretty sure hindi po sa brakes kasi di pa umi ikot ang gulong.




Thanks in advance!

what is your fuel delivery system? feedback controlled carburetor or electronic fuel injection?

[bambino]

possible na loose belt yan or vacuum leak.

to check for vacuum leak,meron na ngayon SMOKE MACHINE na accurately pinpoints the vacuum leaks ,and theres no more guessing.

[Icis]

Thanks

Its just a carburator i think (Its an old ride kasi 96 model.)

Funny thing is that nawawala sya after a while after start up.



Anymore suggestions po dyan?


TIA