QUOTE(amadeo @ Mar 9 2009, 03:59 PM)
confirm blower bro.. when i was at the SC, there's one Persona B-Line car they open to investigate exactlly the same sound.. the knob got nothing to do coz sometime when u turn left to right or right to left, then aircond is not all the time functioning.. when it's time to blow the cold air, the thing will sound like rattling plastic.. haiya so hard for me to explain

sorry for my bad english

Try to check the interval of the sound. (22 second) I check motortrader forum and its the sound of the aircon blowing out some sort of cold air, only for iafm batch. Correct me if i'm wrong

Added on March 10, 2009, 12:39 pmQUOTE(seela85 @ Mar 10 2009, 04:17 AM)
hi guys, last week i go to my 5 service(major service on 20000km) for my Persona... and i feel like my car engine is noisy..

then i complain to the mechanic who work at SC.... when he test it and hear the sound, he ask me " are u using shell petrol..??" and im shock

and answer "yes" ... then he say, "the sound come from INTAKE VALVE coz the Shell petrol so 'nipis and halus'.. so, the intake will noise when knock the head....
then i tell him"shell petrol is better than other petrol, how can it will make problem" then he say, "shell petrol is good but the PROTON Engine is not good for Shell" and he laugh...

and he say, lot of Persona owner got complain about this and when he ask them what petrol they use.. their answer always "Shell"..
so, he ask me to change the petrol to CALTEX or Petronas... and hear the engine sound....
now, i also change the petrol to caltex and now i feel like the sound is decrease...
so, what your opinion guys..??

it is really the petrol problem or what..??

I'm using shell also, a bit powered only, less km, so will go back to petronas
This post has been edited by rave master: Mar 10 2009, 12:39 PM