How does a fuel pump work in an EFI system?
Here a return line is run from the fuel pump back to the top of the fuel tank so that when the maximum pressure is reached the excess flow returns to the tank. Either way, these pumps are not intended for use in high pressure, EFI systems, even if the bypass is blocked to force pressure higher.
How is the fuel pump connected to the tank?
It’s relatively easy to plumb. Route a fuel line from the mechanical fuel pump outlet to the tank and then a high-pressure rated hose from the surge tank to the EFI throttle body and the system is complete. All that remains is to wire an electrical relay to supply power to the pump and plug it in.
Is there no power to the fuel pump?
No power to the fuel pump and the fuel relay is not getti… Q: No power to the fuel pump and the fuel relay is not getting power. My car has 190000 miles.
Can a fuel tank be modified to accept an in tank pump?
A more cost effective alternative is to modify your existing fuel tank to accept the in-tank pump. Modifying the tank to accept the pump will require some fabrication skills, but it can all be done with simple hand tools. If your existing fuel tank is old and dirty, this would be a good time to either have it cleaned or to buy a replacement tank.
What does an EFI fuel tank system do?
EFI Fuel Tank Systems A EFI Fuel Tank System includes the tank, high-pressure EFI fuel pump, level sender. In most cases these are bolt-in replacements for the carburetor-style fuel tank that came in the car from the factory.
It’s relatively easy to plumb. Route a fuel line from the mechanical fuel pump outlet to the tank and then a high-pressure rated hose from the surge tank to the EFI throttle body and the system is complete. All that remains is to wire an electrical relay to supply power to the pump and plug it in.
What kind of fuel pump do I Need?
We recommend sticking with the 255 LPH fuel pump unless you are making over 600 HP, but if that is the case then you can now experience the goodness of the Tanks Inc or Holley Sniper EFI Fuel Tank System with the fuel flow capacity of the iconic Walbro / TI Automotive 400 LPH Fuel Pump.
How do you remove a fuel pump on an ATV?
Pull the gas tank back an inch or so by lifting upward and backward. This allows you to remove the fuel line from the top of the fuel pump assembly, which you should do now. 7. Remove the gas tank from the machine lifting upward and backward.
How can I tune my fitech fuel pump?
Ok can narrow it down by probing your Fitech fuse on the fuel pump Orange wire when you turn the key on for prime. Make sure you are getting a signal from the Fitech. Most likely you are. Are you using a relay or running the pump directly from the Orange wire? How is the pump grounded? Click for thumbs down. Click for thumbs up.
What causes a carburetor vapor lock on an EFI?
The longer an EFI engine runs, the higher fuel tank temperatures can become. Unlike the more common carburetor vapor lock, where fuel is heated to boiling in the float bowl (s) or fuel line (s) under the hood, EFI vapor lock is often caused by hot fuel in the tank.
Where does the cavitation occur in an EFI fuel pump?
In a return style EFI fuel system, the most likely place for these conditions to exist in the same place, at the same time, is at fuel pump inlet. Once cavitation starts, it will feed upon itself.