What might cause Jaguar XF noise on acceleration?

If Your Jaguar XF experiences noise on acceleration common cause is when one of the hydraulic lifts in Your valve train is stuck or not in sync with the rest of the other valves, Youll usually hear a distinct clicking sound. While this issue typically is caused by varnish buildup, it can also be a result of low oil pressure. Most of the time, this can be resolved by simply adding a special additive to the oil. However, a replacement might be necessary.Like many of the sounds You may hear when stepping on the gas pedal, piston pin noise is caused by a lack of oil. When this happens, Youll hear a double knocking sound. This is caused by the excessive clearance between the pin and piston when there is no enough lubrication from proper amounts of clean oil.