I went to Multan on my car last week and back home yesterday. It was a very pleasant drive on highway.
Zulfiqar Bhai, I visited a diesel lab there and asked them to see if pump is ok or requires any maintenance. They worked around some thing they called vacuum opened it up and fixed some thing inside it. After that the cars rattling sound is all over. The CSD started working and mileage has also improved. It had done 16km/l without A/C when going to Multan and fetched 19km/l with A/C on way back to Karachi. Unfortunately I wasn't able to see what they did with the pump. Also, they calibrated the nozzles, which were spraying at 150mpa after servicing. Now after all this I would like to have your comments whether this is up to mark now or still needs any work around.
Thanks