Max. lift pump pressure behind CP3...

[JCobb]

Hello,



I have read that the stock lift pump fuel pressure on my 04. 5 Dodge is about 10 psi. I am going to be installing a second fuel system for use with biodiesel and straight vegetable oil. I have a great lift pump (made for oil movement Shurflo brand) for the alternative fuel system, but it puts out about a max of 32 psi. Will this higher amount of pressure hurt the CP3 pump (or anything else for that matter)? Should I regulate it down to like 12 or 15 psi or can I use this pump like it is? What do you all think? Thanks in advance for any input.

 

[rbattelle]

You'll get a variety of opinions on this, but here's mine.



Although some guys seem to have no problems running 25 or more pounds, I think you'd be better off keeping the pressure at or below 15 psi or so. This minimizes stress on the fuel control actuator (which controls where the flow goes as it enters the CP-3).



But like I said, there are lots of guys running 25 or more PSI, so I think it's really a matter of personal preference. Personally, I'm ridiculously paranoid about breaking something by my own hand.



Ryan

 

[BIG BOB]

I've been running 50#'s with my Mitusa for over a year now and haven't had any issues.