Knocking from rear driver side arch

Hi there

I recently serviced my 2004 Freelander Sport (changed oil, oil filter, air filter, crankcase filter, cabin filter, fuel filter and blanked the egr)

Maybe a few days or so after I have developed a knocking sound from the area where the fuel filter is (drivers side rear, under the fuel filler cap)

It varies in speed and loudness depending how cold the engine is. Sometimes it goes away, sometimes I can be sat at traffic lights with a warm engine after ha,f an hours driving and still hear the knocking.

Does anyone have any idea at what this could be?

Also, this in turn has started a slight but noticeable shudder in the lower gears when sitting steady at 30mph in 3rd or 4thfor example.

Holding at a certain speed starts a shuddering unless I give it more gas

sounds as though the fuel filter is not secured properly

+1, filter or assembly could be loose, as exhaust tailpipe also passes through this side then any resonance in this area could becausing fuel pump or filter to rattle.