i have a 2010 c63.
when i got the car it had a bit of a "groan"
especially when cold or at stand still.
this has gotten worse untill the other day for some reason it began to push fluid out of the headder tank.
ive cleaned this up and removed the rack to drain the fluid and replaced with new.
the car was transformed. the pump was silent and smooth and no more fluid loss.
2 weeks later and the noise is slowley comming back.
the fluid is very foamy its almost like its drawing air in somwhere
any ideas what might be causing this?
when i got the car it had a bit of a "groan"
especially when cold or at stand still.
this has gotten worse untill the other day for some reason it began to push fluid out of the headder tank.
ive cleaned this up and removed the rack to drain the fluid and replaced with new.
the car was transformed. the pump was silent and smooth and no more fluid loss.
2 weeks later and the noise is slowley comming back.
the fluid is very foamy its almost like its drawing air in somwhere
any ideas what might be causing this?