Hello I am new to this site and new to tdi's. I am a professional heavy duty truck mechanic and purchased my first Volkswagen jetta brm to commute back and for to work. It has 222000 miles on it since I bought it with 218500. It wasn't running when I got it. I saw it needed a cam and turbo so I did it one weekend in my shop. The car runs great but is getting at its best 38 mpg all highway. It has had a ticking noise coming from top end ever since the rebuild, don't know if it had it before because it wasn't running. I have vcds and have played with torsion values and seems to run best and get best mpg's at +1.5. Put a factory turbo and colt stage 2 cam in. When checking vcds injector 3 is at +1.65. Ran diesel purge several times. Seems to be getting better because when I started it was at +2.99. Would that injector be making the ticking sound? Thanks for the help everyone!!!