Fueling issue

GorillaDave

GorillaDave

Aníbal Catastrophe
Joined
Nov 11, 2012
Messages
809
I recently finished up my twins and fuel system, I am running an A1000 pump (used from another member here), 1/2 lines, and a A13101 bypass/boost referenced regulator.

Routing as follows:
BDP sump to pre-filter then to pump and pre-filter to inlet on regulator to Ppump.
Return/Bypass from regulator is tee'd into original supply from tank along with return from injectors.

I am seeing 40ish lbs at idle and it pulls well below 20 with anything past half throttle even with the boost referencing hooked up.

Where did I go wrong?:nail:
 
i think you want the regulator on the back side of the injection pump like the ofv was, you may be returning too much fuel before the pump?
 
jamesl said:
i think you want the regulator on the back side of the injection pump like the ofv was, you may be returning too much fuel before the pump?
Click to expand...

ok so if I am following you right, I need to run fuel from the A1000 to the Ppump then have the req on the return side of the Ppump?:confused:
 
After a few beers and looking into how everything works. I believe I am in fact returning too much fuel. I'll get the fittings and re plumb everything.
 
GorillaDave said:
ok so if I am following you right, I need to run fuel from the A1000 to the Ppump then have the req on the return side of the Ppump?:confused:
Click to expand...

thats correct. tee in the injector return line past the regulator also.
 
I temporarily pinched off the return line from the pump and miracles happened. Fuel pressure holds 50 at idle and referenced to 70. I will get the fittings I need when payday gets here and do it correctly. Until then I'll ride the scooter to work
 
For anyone that happens across this later, metering flow out is far more accurate that metering flow in for a hydraulic application.



From my Not-So-Smart phone
 
biggy238 said:
For anyone that happens across this later, metering flow out is far more accurate that metering flow in for a hydraulic application.



From my Not-So-Smart phone
Click to expand...

This sounds vaguely familiar, but it has been quite a few years since I had any dealings with hydraulic applications like this.
 
Like this,

20130602_223911_zps98821312.jpg



Best to have an open Banjo bolt or gut a stock OFV.
 
scat said:
Like this,

20130602_223911_zps98821312.jpg



Best to have an open Banjo bolt or gut a stock OFV.
Click to expand...

The injector return line is why I never finished mine. I couldn't down the truck long enough to risk a FUBAR and didn't have a good plan for tying it in to my return.

From my Not-So-Smart phone
 
biggy238 said:
The injector return line is why I never finished mine. I couldn't down the truck long enough to risk a FUBAR and didn't have a good plan for tying it in to my return.

From my Not-So-Smart phone
Click to expand...

I plan on cutting mine and flaring it with a 5/16 flare nut and or using a swedgelock with a 3/8 to AN fitting and running it all together.
 
I had the nut and flare tool. Just never but it. I sold it all to one of Josh Lands associates.

From my Not-So-Smart phone
 
That was a really clean set up. What type of aeromotive regulator did you use
 
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