1. this started happening recently to my car. pag naka-idle sya naglalaro ng konti yung tach. nasa 900 usually pero after a while bababa to around 600. its gonna go up again after i rev the engine. happens whether the A/C is on or off. what could be the cause? dirty carbs lang ba? feeling ko parang medyo humina na din ng konti yung hatak.

2. ano usual duration before you change the timing belt? its been more than 4 years na kasi since napalitan yung sa kotse ko eh.

3. follow up to 2... i talked to my mechanic and sabi nya we should also replace na din the following parts: camshaft oilseal, pully oilseal, tensioner, o-ring pump. is that all? meron pa ba kulang?


any feedback is appreciated.