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What makes a fuel injector the correct size?

What makes a fuel injector the correct size?

Most important is that you have fuel injectors that are the correct size in terms of flow rating. In fact, most injectors are a similar size physically, though there tends to be more variation in throttle body injection injectors than in port injectors.

What kind of TBI is used for throttle body injection?

2. Throttle Body Injection = TBI The 4.3, 5.0 and 5.7 TBI’s are all the same CFM with 1 11/16th bores. The injectors are different sizes. The 454 is larger with close to 2 inch bores. It is recommended a TBI from about the same size engine to be used in your conversion or larger for high performance built engines. 3. TBI Wiring Harness.

Can a TBI be used in a fuel injection conversion?

It is recommended a TBI from about the same size engine to be used in your conversion or larger for high performance built engines. 3. TBI Wiring Harness. Wire harness can be pulled from the factory car and reworked for a conversion. There are also aftermarket options to buy one new already made. Here’s an idea of what one looks like when pulled.

What should the idle pulse width be for an injector?

However, do not install injectors with a much larger flow capacity than you need. Very large injectors will create idle pulse width issues that will make tuning very difficult. You can estimate your idle pulse width beforehand. For proper tuning, you will need an idle pulse width of at least 1.7 milliseconds.

What happens if the fuel injector is not working?

Fuel injectors are a vital part of a complex fuel management system. Furthermore, New technology has made fuel injectors more precise than ever in dispensing fuel. If the fuel injectors are not operating properly, then other parts of the engine will be affected as well.

How can I keep my fuel injector in good health?

Another great way to keep injectors in good health is; to regularly add a fuel injector cleaner to to your fuel tank. Many manufacturers claim that these cleaners, will give your car extra power or increased mpg. They probably won’t, or make much difference, to a car that is running properly.

How does a motorvac fuel injector system work?

MotorVac (the system we use) is just such a machine. This system circulates detergents thru your fuel rail and pressure regulator, using a venture action to remove insoluble material from the injector inlet screens, before cleaning the injector ports, rather than just spraying solvent thru the injector.

When to replace fuel injector seals and washers?

If the O-ring fitted to the injector is the problem; then replacing this O-ring will usually fix the leak. If the injector body; nozzle or internal components are cracked; then a new or refurbished injector is your only option. Replacement fuel injector seals and washers are cheap and are, fairly easy to install.

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Ruth Doyle