My accent 2007 has a strange and high sound out from the motor when I press the fuel foot pedal (accelerator) a little bit hard.
I noticed also that the speed power become weak.
What is going on?
These are some notes that may be useful in diagnosis:
1) distance counter: 162000 Km
2)The climate environment: very hot (40 - 50 degrees)
3) I have just change the following parts (timing belt+spark plugs + fuel filter + oil filter) and the sound still exist.