High pressure fuel pump contamination

[Souser17]

Can someone tell me does the unused fuel go back to the bowl and get reused from there or does it go to the tank and reused from there

 

[DaveBen]

It goes back to the tank and gets reused.

 

[Souser17]

 

[Souser17]

I have had people tell me it goes back to the tank and I have done a little research and found it does not go to the tank. It goes back to the fuel cooler and back thru the injection pump. If I am reading that diagram correctly.