In tank fuel pump pressure Audi a4 b7 3.0 tdi asb engine

[peterb7]

Been chasing a problem for months and I think I may have the answer finally.

My fuel pressure from the tank dead headed is 3.5 to 4 psi using vag com in output mode to activate the pump.

I do have etka and it does not state anywhere what the fuel pressure should be, only that it can be tested electrically by plugging a test switch into the fuse location.

When I look for a replacement pump I get a choice of 0.5 bar or 5 bar.

The engine runs well untill I demand more fuel, 

I have tested alot of components fitted a new turbo and actuator.

any help would be appreciated.

[Steve Q]

I'm guessing you've done a diagnostic check recently. Also I do think it could be the fuel pump. You could also looking at getting the tank cleaned maybe.