[Waterfox]

There are two principal types of mechanisms used to build suction and pressure to move the fuel. The most common is the georotor. It is the quietest and has the capability to create very high pressures. The pump mechanism consists of a stationary gear with a rotating ring. The second is the rotory vane. In this type of pump the mechanism consists of a stationary offset rotor with sliding vanes to create the pressure. This type of pump works well, however it is noisy and less dependable over the long term. more

[Sawzall]

Electric inline fuel pumps are divided into two categories: carburetor and fuel injection. Carbureted engines require low pressure — typically 10 PSI — and enough volume to maintain the fuel level in the float bowl under all engine loads. A fuel-injected engine’s demands are different. They require continuous high pressure — typically 45 PSI — at the fuel injector to maintain a uniform spray pattern regardless of the fuel volume requirement.

[Nefario]

When using an inline electric pump on an engine with a carburetor, it must be 10 PSI or less. The biggest consideration is the volume the pump is capable of producing. Thirty to 45 gallons per hour is typical of a standard pump. A fuel pressure regulator is necessary to keep the pressure in the 5-to-7 PSI range, low enough to prevent overcoming the needle’s pressure on the seat, causing the carburetor to flood. These fuel pumps are quite reliable and are used to replace the manual pump on a daily operated vehicle.

[cereal_killer]

The right size of electric inline fuel pump necessary for a fuel injected engine requires more consideration than does a carbureted version. The volume in gallon per hour will increase as well as the PSI it is capable of producing. Do not misinterpret the reason for the gallons per hour rating. It is not intended to depict the amount of fuel it will flow into the engine. It is used to equate the pump’s ability to maintain a constant pressure at the injector nozzle at all flow rates. The fuel injectors do not open further as the vehicle is accelerating — the opening is fixed. However, they are opened for an ever-increasing period of time as the vehicle is accelerated. The longer the injectors are opened the higher the volume necessary to maintain the same pressure at the nozzle. The rated pump volume in gallons per hour drops dramatically when accelerating. The next consideration in the equation is the amount of horsepower the injectors are feeding. The higher the horsepower, the larger the injector opening, resulting in a larger spray pattern. The larger the spray pattern, the larger the pressure drop at the nozzle. All inline high-pressure pumps require a fuel pressure regulator between the engine and the pump. High pressure inline pumps feed a higher pressure continuously which is opposed by the fuel pressure regulator with no provisions for a return line. The system works well for performance purposes but falls short in terms of longevity. The in-tank electric fuel pumps use a regulator with a return line to the tank. At an idle all the fuel over and above that needed to maintain a constant pressure on the injector is sent back to the tank. This applies much less stress on the fuel pump and lines thus giving them more durability. Some vehicle’s computers have the ability to govern the rpm of the fuel pump. more

[1kewlchicu2]

We're here to show you the right way to do it!

[zmauricepittmanj]

But they don't have to be. [links]

[citizen]

The pump started back up after it cooled down and we were trouble-free all the way there and back. When we got home he wired it in neatly and never had a problem after that. here

[vermonthotels545]

Yep, without some way to automatically shut them off, they can be VERY dangerous. [links]

[jayrod]

I don't think there is a switch on my engine. Can I T one in behind the sender on the side of the engine? Where would it be located on a 2.5 Merc? (I mean the switch if there is one.) [links]

[bitcool]

Re: Installing electric fuel pump more

[linksnappy]

Re: Installing electric fuel pump [links]

[X0nic]

Merc picks up the power to the pump while cranking from the starter solenoid. In the drawing below, it's the purple/yellow wire.

[lach]

Yes, you can tee it off. Just make sure that vibration won't be an issue and it breaks the tee after time.

[betty20a]

If you are at an office or shared network, you can ask the network administrator to run a scan across the network looking for misconfigured or infected devices. [links]

[Kristin Kelly]

If you are on a personal connection, like at home, you can run an anti-virus scan on your device to make sure it is not infected with malware. more

[nrtr]

Another way to prevent getting this page in the future is to use Privacy Pass. You may need to download version 2.0 now from the Chrome Web Store. [links]

[spidr_mnky]

Completing the CAPTCHA proves you are a human and gives you temporary access to the web property.

[rebuilder]

Cloudflare Ray ID: 687bb7795b5e0c4e • Your IP : 46.32.66.208 • Performance & security by Cloudflare

[UnWar]

Completing the CAPTCHA proves you are a human and gives you temporary access to the web property.

[kathybrendan962]

If you are on a personal connection, like at home, you can run an anti-virus scan on your device to make sure it is not infected with malware.

[sherrylewis3usa]

Another way to prevent getting this page in the future is to use Privacy Pass. You may need to download version 2.0 now from the Chrome Web Store.