How does Returnless fuel system work?
How does Returnless fuel system work?
A returnless fuel system uses an in-tank pump and regulator. A single fuel line exits the tank and travels to the engine. Pressure is controlled by a computer, which monitors a series of engine sensors to determine how much fuel to deliver.
Where does the vacuum line go from the fuel pressure regulator?
The fuel pressure regulator mounted on the fuel rail has a vacuum hose with a tee, one hose goes to the intake manifold and the other somewhere to the rear of the engine on the port side.
What kind of fuel pressure regulator do I need for LS swap?
FUEL SYSTEM For the fuel system when doing an LS swap, the most common approach is to use a C5 Corvette fuel pressure regulator along with an electric fuel pump that has adequate flow, such as the Walbro 255. People also typically use Russel fitting adapters with this combo.
Is there a guide to making a seamless LS engine swap?
This guide will assist you in making a seamless LS engine swap. Since every LS engine swap is a little different and there are lot of choices to be made, you can use this guide as a reference for ideas and part numbers as you move through the process.
How much does it cost to do an LS swap?
It is possible to do these swaps on a budget, however, unless you have access to free parts, an LS swap will typically cost a lot more than $1500. We hope you have found this LS swap guide helpful. Please feel free to send us any comments or suggestions you may have.
What kind of fuel pump do I need for LS engine?
External Fuel Pump. These pumps deliver 6 to 14 psi, not nearly close enough to the 60 psi required to operate an LS engine. Any less than 60 psi and it leans out and does not run well, if at all. Thankfully, there are plenty of in-line EFI pumps to choose from. Many builders prefer the Walbro GSL 392 external pump.
