Posted September 26, 201311 yr I have seen on this site a couple of times where 17# is the ideal fuel pressure. My pump provides 12-13#. Why is 17# better?
September 26, 201311 yr I set all my pumps to 18. The fuel is lubricating and cooling the vp44 so the more fuel you can supply to it the better. The return valve pops at 14psi so if you aren't above that then there isn't excess fuel to cool and lubricate http://articles.mopar1973man.com/2nd-generation-24v-dodge-cummins/25-fuel-system/88-bosch-vp44-injection-pump-overflow-valve
September 26, 201311 yr Author I set all my pumps to 18. The fuel is lubricating and cooling the vp44 so the more fuel you can supply to it the better. The return valve pops at 14psi so if you aren't above that then there isn't excess fuel to cool and lubricate http://articles.mopar1973man.com/2nd-generation-24v-dodge-cummins/25-fuel-system/88-bosch-vp44-injection-pump-overflow-valveThanks for the article link and the info. I often forget that there's more to this site than just the forum.
September 26, 201311 yr Owner More to add... Bosch VP44 injection pump requirements http://articles.mopar1973man.com/2nd-generation-24v-dodge-cummins/25-fuel-system/415-bosch-vp44-injection-pump-requirements Bosch VP44 injection pump fuel pressure specifications http://articles.mopar1973man.com/2nd-generation-24v-dodge-cummins/25-fuel-system/49-fuel-pressure-specification-for-bosch-vp44-injection-pumps
I have seen on this site a couple of times where 17# is the ideal fuel pressure. My pump provides 12-13#. Why is 17# better?