300tdi lift pump pressure
I run a 2-tank diesel/WVO fuel system and have been through three Facet electric pumps in three years. While still a cheap way to go, considering I drive nearly for free, I have decided to upgrade my electric lift pump to a Walbro FRB-5.
It is rated for 8-11psi.
Is this too much pressure to send to the IP?
Also, since I loop my return fuel back to the IP when on WVO (to retain as much heat as possible in the WVO), at what pressure does the IP return fuel? I ask this because, since I am returning fuel from return port of the IP back to the inlet of the IP, I know the IP inlet can handle at least the return pressure from the IP.
Thanks in advance.
By the way, if anyone wants to know why I do not use the stock mechanical lift pump, my reason is that I am not certain the diaghram can handle the fatty acids in the WVO as I had a new one fail in less than 6 months. It was a pain to access. Roadside repairs are much easier when you only need to access the inner fenderwell rather than the lower back end of an engine block!