Sr20 fuel pressure problem

[sr kid 88]

Ok need some input people. My car is gettin tuned right now on e85 and my tuner told me that my fuel pressure keeps failing so he can not complete the tune till this problem is fixed. The car is a fully built sr20det top to bottom. We already put a new fuel filter and Areomotive afpr. I have 1250cc injectors and a single 255 fuel pump. Gonna try a new fuel pump Friday and see if that's the problem. Any other suggestions? Thanks in advance

[JDMRIDDAZ]

voltage to the pump...
do this b4 u bu a new one

[sr kid 88]

What should the volts be?

[jspaeth]

Ok need some input people. My car is gettin tuned right now on e85 and my tuner told me that my fuel pressure keeps failing so he can not complete the tune till this problem is fixed. The car is a fully built sr20det top to bottom. We already put a new fuel filter and Areomotive afpr. I have 1250cc injectors and a single 255 fuel pump. Gonna try a new fuel pump Friday and see if that's the problem. Any other suggestions? Thanks in advance


What kind of turbo are you running?

Are you sure a single walbro can handle that much power (that you need 1250cc injectors)?

[JDMRIDDAZ]

uh like at least 12v.
but if u rewire the pump and jump the alt to the main battery terminal
u can get it to 13-14v when car is running

[sr kid 88]

What kind of turbo are you running?

Are you sure a single walbro can handle that much power (that you need 1250cc injectors)?


Turbo is a 3071. The 1250cc injectors is for e85. Just ordered a bosch 044 to run it inline with the 255 so hopefully that does the trick

[hingamatt]

Has anyone heard about the stock pumps being two stage voltage? I heard somewhere that they run around 6 volts for cruising and light driving and when you push on the pedal it switches to 12 volts.

Seems weird for a car from 1996 to have a dual voltage pump. What would the purpose be?