Salam guys, I have this problem with my Mehran 2011 model VX CNG which i run on petrol. When the car is parked over night or for 4-5 hours and i start it and put it in first gear and release the clutch. A big TUK sound comes from underneath the car, it feels that it comes from the bottom right side of the car. This happens only in the first gear and the first time i drive the car in the morning after that the sound doesn't come again no matter how many times i stop and put first gear again and then drive. I discussed it with the mechanic and he said that there is a problem in the cars differential and the gear box needs to be repaired. I am very reluctant in doing that because car is only 45000 KM driven and there is no issue with any other gear or anything. Any other solution? @xulfiqar
