Gasail pump is descended

Hello, I spend this problem, from a Peugeot Boxer van, when it is a couple of days without starting when giving the starter they hear like bubbles in the deposit and I have to bleed with the gasile filter button it costs a lot like 1/2 h once I start it, it already works well until it is again without starting a long time. Finding the failure, I also want to seek if Algien knows if in the the aspiration pipe of El Dposito inside the deposit we carry some antiretorno.
thank you .

Good day greetings, you must check the connections that are in good condition and verify that they are tight checks the filters that are tight, check the pump return valve may be open and discharge the pump verifies that it does not find air inlets in the system.

Thank you for answering, but after checking filter pipes, filter carrier and not finding anything that could be the cause I have decicated to disassemble the injection pump and take it to a Delphi workshop to check and tare it. I will tell how it looks.


Thank you.