My car is a19 and ticks. In my experience with direct injection the high pressure pumps are noisy by nature. If the ticking is unusually loud replacement can help ivey replaced a few on different makes and models. If the are no codes from the high pressure fuel pump sensor then dealers find it functioning correctly and will not replace for noise.
This all depends on mileage and the type of sound it's making. Ticking is normal....tapping is a sign of wear. If the engine doesn't have sufficient bolts on it I highly doubt its worn or doing anything abnormal. The pump isn't hard to change....it is under extreme pressure when running... up to 1500psi.
