M54 Engine pinking @ low speed

[siva@e60]

Dear Sifu's,

I need some advice my car has been pinking at low speed i tried changing my petrol brand using RON 95 still the same.
When you drive with window down can hear clinking....clinking sound

I have changed all 6 coils and plugs, fuel pump replaced with fuel filter.

Could it be my knock sensor or O2 sensor which i have not replace.
I send my car to Optimum for service there no error code showing.............???????????
No lost of power that i can feel drastically.............Engine Oil every 7k i service, ATF and Filter change at every 30k.
Mileage is 196k as of today.

What could be the issue.

Thanks bro

Cheers
Siva 012-6016707

 

[moots]

bro...curious,,,what did Optimum say?Are they not able to fix this?
Have you met up with Ah Fai or Ah Foo?

 

[alantiong]

fuel difference do not contribute to such obvious pinging.. i believe it is the crank, cam sensor.

 

[Xthree]

Is the ping sound you heard is when goes uphill or when press gas pedal hard ?

 

[siva@e60]

Is the ping sound you heard is when goes uphill or when press gas pedal hard ?

Xthree even normal straight road in cruising in your housing area you can hear it clinking sound loudly, off course going up rams for parking the sound is clear.

My question shall change the knock sensor or O2 sensor ?

:69:

Cheers
siva

 

[Xthree]

Looking forward for your good news ... all the best Siva ..