Tappet noise only in gear
I'm new on here and wondering if anyone could help? I've just bought a one owner from new Alfa 156 Twin Spark with full service history and low mileage. The engine sounds fantastic when it's in neutral no matter how fast it is revved, however when it's put in gear there is a faint tappety noise that increases and decreases with the speed of the engine.
It's quite faint and you can't hear it with the windows closed, but i have to admit with the windows open it is slightly annoying as it's something i haven't been used to on previous cars I've had. Any ideas greatly appreciated.