Mk6 swb tddi 75hp, knocking and power loss problem

[Taazrok]

Hi all.
I was driving my van a few days ago when it lost power and started making a knocking sound,
I managed to get it home but have no clue what the problem could be.
Iv checked all pipes and connectors, cleaned fuel filter.
Iv just finished doing an injector leak of test and got strange results
After 35 mins on tick over
Pot 1 - 0 mg
Pot 2 - 5 mg
Pot 3 - 0 mg
Pot 4 - 0 mg
. Thanks for your help in advance

[Taazrok]

I forgot to ad it's a 2.0 and year is 2000.
Iv just brought a f super and plugged it in and got the following codes
P0650,
P1666
P0149

[knobby1]

I forgot to ad it's a 2.0 and year is 2000.
Iv just brought a f super and plugged it in and got the following codes
P0650,
P1666
P0149

Last two codes point to a failed fuel pump. Possibly a duff timing solenoid too. FWD's often have issues with the wiring loom where it goes over/near the starter, might pay to have a poke around there. Costs nothing to check.

First P0650 code is unrelated to fuel pump.