I have a mehran, its cramk case was leak so i opened the engine out and told the mechanic to chexk piece as it sounds he told me to change them and later the car sound increased the next day he said it was the cam then he opened up the dailco and said the cam nuts are lose so he tightened them up..
the sound decreased but from then on the engine is having problems no pick up... and missing in the morning... whats the solution i tuned the car twice can there be any engine problem