Pressure retention valve in fuel return line.

[Moparmax]

I was doing work in the valley of a newly acquired 2013 Touareg and found the pressure retention valve had been removed and a simple tee was in its place, the thing runs and drives fine but does have a long crank sometimes when parked uphill on a slope. I'm thinking this is the reason.

Does anyone have a PN or lead of a replacement that isn't crazy expensive, I have done some looking but the prices are nuts. I can buy a nice SS ball check cheaper...

 

[TurboABA]

That seems very weird... the injectors require a min return pressure to operate correctly..... I'd suspect you're damaging your injectors running it that way.

 

[Matt-98AHU]

I don't think a ball check is going to make much of a difference vs. a simple T. The pressure retention valves are meant to hold pressure in those lines at around 10 BAR (145 PSI!).