Quote Originally Posted by odrag View Post
mga bossing,
magtatanung lang ako kung saan ang location ng vacuum pump ng corolla 2e engine? mahina kasi vacuum kaya lang di ko alam kung saan ako mg-sstart ng linis. nalinis ko na lahat ng hose pero ganun pa rin. malakas naman humatak makina. mas ok sana kung may diagram kayo na ma-sshare sa akin... salamat po muli and sana matulungan nyo ako...

odrag,
your engine is a vacuum pump itself, hehehehehe. is your 2e carbureted or is it 2ee (fuel injected)? are you talking about the air induction hose between the air filter and the throttle body? it if is the L type fuel injection, the airflow meter signal will not jive with the throttle position signal and the engine will hunt. however if it is the D type fuel injection, the only adverse effect is a dusted engine. the engine vacuum should be between 17 to 21 inches of mercury(inHg) at idle speed. if the vacuum is low, there could be a vacuum leak behind the thottle plate at the carburetor base or the intake manifold gasket or a leak at the PCV valve or the vacuum brake booster. please clarify your problem statement for a more definitive answer.
jick