T6 lift pump faulty?

[t6stormer]

Hi Everyone
I've done a search but still struggling

Vw t6 2018 150bhp dsg

Dropped the fuel tank to fit kombi brackets re fitted tank but van wont fire,
Tried transfer pump on vcds runs ok but still no start.

Next dropped the tank again, cleaned it all out with freah fuel, and new fuel filter.

Tried transfer pump test to prime lots of times but still not atarting just cranks over.

I've now removed the pipe to the inlet of the fuel filter and tried the fuel transfer test

Its just spitting out no flow at all, I've tried running the pump countkess times but still no flow.

Its pointing to a faulty transfer pump im guessing. Should i have a good flow in the pipe pictured.

The only way i could start the van was to fill the fuel filter manually and after a few cranks it started, however i tried again after an hour and it wont fire again.

Is there a way to test the transfer pump properly

 

[DXX]

If the pump was working before you dropped the tank it isn’t the fuel or the lift pump. I would say that you have dislodged and electrical connection to the pump or damaged the wiring harness.

 

[t6stormer]

Thanks for the reply, i have tested the wiring harness and there is continuity there. The lift pump also works using vcds runs for about 3 mins. However wiith the lift pump running there is no flow it only spits out and sounds like there is lots of air in there. I have run the pump many many times to try to expel the air but is still the same

 

[DXX]

Thanks for the reply, i have tested the wiring harness and there is continuity there. The lift pump also works using vcds runs for about 3 mins. However wiith the lift pump running there is no flow it only spits out and sounds like there is lots of air in there. I have run the pump many many times to try to expel the air but is still the same

Obviously the lift pump should be self priming.
Try using a syringe to pull fuel through the pump.

 

[HBob]

What was the outcome

 

[DXX]

@t6stormer