A4 B8 2.0 CR CAGA fuel pump priming

[zyznos321]

Is it possible to set in this car ecu fuel pump priming for 5sec after turn on ignition?
I need this cause fuel in my car probably goes back after days or two and I have long cranking after :/

[zyznos321]

Anyone can help?

[treble6]

yes.check for o ring leaks its drawing air allowing it to go back to tank

[Makubika]

So far I do not know how to but your problem seems to be fuel pump. Replace the pump with oem and yo will kill the issue.

[zyznos321]

yes.check for o ring leaks its drawing air allowing it to go back to tank

Do you know which oring can causing this problem?

[zyznos321]

I want to enable secondary pump fuel priming for 5s after ignition ON. Is there any way to do this on VCDS or in ECU maps?

[treble6]

replace the orings on fuel filter both pipes then test after couple days,also check fuel filter housing for minor cracks or make sure its tightened up ok

[zyznos321]

In a4 b8 caga I have fuel filter like this:

734528

734529

There should be any orings?

[zyznos321]

Is it possible to set in this car ecu fuel pump priming for 5sec after turn on ignition?