guys..i realised that at times..while im driving my manual 1.6 wira XLi..there will be sort of a very short "pssst" or rather "pssshh" sound coming from the front left end of the car..and whenever the sound comes,at that instant my car will lose power,something like me letting go of the pedal..it rarely occurs and happens only for less then a second and i was wondering if its anything serious..