Hi all,

i recently got this car has 45k miles on it. Well taken care of with full service history. I also took the car for a regular service to vw dealer and they connected the car to their computer and everything was fine.

The problem (?) is that idle jumps up and down after I touch the throttle a bit. This only happens in cold starts. There is a link for the video about this.

VW Golf mk6 1.6 TDI cold start..rpm jumps up and down after giving gas - YouTube

i also hear knocking noise in low rpms below 1500. The car is equipped with DSG. I did a little research and this issue might be related to injector problems.

so anyone experiencing this problem with 1.6 TDI CR engine. What would be the possible problems?

thank you in advance