Toyota 5vz, V6 - Petrol cut out after driven 50 km

[rizshahid]

Looking for a 5vz expert to help me out here.

I have a custom ride built with Toyota's 5vz engine.

Issue: my jeep starts cutting petrol once driven 50km everytime. Ive changed 3 fuel pumps but issue still persists.

What can be causing this? Could it be the wiring, ECU, air intake manifold, etc..?

Unfortunately, mechanics have no clue and i am sick n tired or thier trials and errors.

Can someone guide me who faced a similar issue?

Thanks.

[Xulfiqar]

does the pump stop? - how is the pump wired up? original toyota system with Circuit Opening relay and ECU control or hot wired with key?

does the pump lockout due to vapour lock? - are the lines installed correct?

does the pump dry out due to fuel slosh in tank?

what vehicle have you stuffed the 5VZ in?

[Moderator]

@syncview @ser_gtr @dani_kk @rajaatta @Vcheng

[Moderator]

[dayrider]

Kindly elaborate the issue

[VCheng]

does the pump stop? - how is the pump wired up? original toyota system with Circuit Opening relay and ECU control or hot wired with key?

does the pump lockout due to vapour lock? - are the lines installed correct?

does the pump dry out due to fuel slosh in tank?

what vehicle have you stuffed the 5VZ in?

All good ideas, but I would first look into whether the fuel pump is correctly identified as the culprit for presumably the engine cutting out after 50 km exactly.

[dani_kk]

Fuel lines can be blocked, tank can be very rusty and can cause pump failure

[dani_kk]

Indeed this is an important question. Which car it's stuffed in would allow us to help effectively

[rajaatta]

Following for the questions already asked

[rizshahid]

It was the darn FUEL PUMP!!