Hi, need some help with a simple problem..so simple I can not see why!
I am running a Carter Heavy duty fuel pump thru a standard Summit (sum G3032) fuel pressure regulator feeding 4 twin choke 40mm De Orto downdraft carbs.
I can set the pressure at 3 to 4 psi and the car has run successfully until last weekend when it started normally at the end of the day and then appeared to run out of fuel (tank was more than half full). Always fun pushing it on the trailer!
At home I striped it down and could find no apparent fault with the fuel regulator so pulled a hose off the front carb and no fuel despite the gauge still showing 4psi. Blew all the lines back thru the reg and all clear, re assembled the regulator and with it removed from the fuel accumulator bowl, turned on the pump and had very good open pipe flow. Re attached accumulator bowl and turned on the pump.....bugger no flow to the carbs. There is nothing inside the accumulator bowl there for there is nothing to halt flow. I have stripped that damn reg down more time than I care and its so simple in design that it baffles me as to what may be the cause. I am determined to find the fault rather than just fitting my spare regulator on.
Any ideas please.
The second photo shows the fuel accumulator with the 4 fuel hoses out the bottom....
Cheers
I am running a Carter Heavy duty fuel pump thru a standard Summit (sum G3032) fuel pressure regulator feeding 4 twin choke 40mm De Orto downdraft carbs.
I can set the pressure at 3 to 4 psi and the car has run successfully until last weekend when it started normally at the end of the day and then appeared to run out of fuel (tank was more than half full). Always fun pushing it on the trailer!
At home I striped it down and could find no apparent fault with the fuel regulator so pulled a hose off the front carb and no fuel despite the gauge still showing 4psi. Blew all the lines back thru the reg and all clear, re assembled the regulator and with it removed from the fuel accumulator bowl, turned on the pump and had very good open pipe flow. Re attached accumulator bowl and turned on the pump.....bugger no flow to the carbs. There is nothing inside the accumulator bowl there for there is nothing to halt flow. I have stripped that damn reg down more time than I care and its so simple in design that it baffles me as to what may be the cause. I am determined to find the fault rather than just fitting my spare regulator on.
Any ideas please.
The second photo shows the fuel accumulator with the 4 fuel hoses out the bottom....
Cheers