General Fiat punto 2011 diesel

[Najeebullah]

I have recently noticed that my punto 2011 sounds perfectly while idling and even revving to high RPM, but as soon as the car starts moving there is a loud muffled knocking sound, which lowers significantly after driving 10 to 15 kms, can anyone suggest what it is?

 

[varesecrazy]

I have recently noticed that my punto 2011 sounds perfectly while idling and even revving to high RPM, but as soon as the car starts moving there is a loud muffled knocking sound, which lowers significantly after driving 10 to 15 kms, can anyone suggest what it is?

Hi,
does the sound change with engine RPM, Or the road speed?

 

[Najeebullah]

Hi,
does the sound change with engine RPM, Or the road speed?

yes as you increast the speed the knocking gets faster and after 10 to 15 kms the sounds is negiligable