Sunnybank Hills Car Care

Electronic Fuel Injection system

The best way to increase the performance of your car is to install an electronic fuel injection system. It is considered a standard in the auto industry although many car owners still prefer carburettors. Let’s look at what an electronic fuel injection system is. Why is it a standard?

What is an electronic fuel injection system?

A fuel injection system is used for mixing air and fuel in an internal combustion engine. Designed and calibrated for a specific type of fuel, it has become the main fuel delivery system of cars today. An electronic fuel injection system has almost replaced carburettors. Although much more complicated than a carburettor, an electronic fuel injection system is more efficient. The valve is controlled electronically which supplies atomized fuel to your car’s engine. Several sensors are attached to this system which control the amount of delivered fuel to the valves. These sensors include voltage sensor, engine speed sensor, throttle position sensor, coolant temperature sensor, and airflow sensor. All the systems in a car are working in relation to this system, enabling you to have better handling of your car’s speed. Being a computerized system, different problems can affect it. Some of these problems are discussed below.

What can go wrong?

All the major decisions made in the system are controlled by an electronic control module (ECM). If your ECM is broken, problems will start occurring in the fuel injection system and its control. The good thing is that the ECM does not fail very often especially on new cars. If a problem does occur, you should immediately consult a mechanic, test and replace the system if needed. The point to understand here is that a lot of things can affect the efficient operation of EFI. The test is to figure out what is causing the problem. Problems with fuel injection systems can consist of stalling, hard starting, surging, no starts and misfiring. For example, dirty injectors will limit the amount of fuel in the engine causing the fuel mixture to leaner than normal. This will result in poor performance and increase emissions of hydrocarbon.

How to know something is wrong?

If you want to know whether something is wrong with your electronic fuel injection system or not, you have to follow a systematic process of steps. In order for the EFI system to operate correctly, three things must be present:

  1. An adequate supply of air for air/fuel mixture
  2. A pressurized supply of fuel for operating injectors
  3. Control computer must be able to send trigger signal to the injectors

If you have drivieability problems, it could mean that the engine is cold. You need to check for external reasons such as fuel system pressure and manifold leak. If you are experiencing misfiring or hesitation, it can be caused by fuel injectors. If you hear sounds like high idling or clanging, then the problem could be something else. As a first step, check the engine. If it cranks but does not start, the problem can be related to wiring, injector relays, a pump relay or a fuel pump. If the fuel pump is running when cranked, then the problem lies in the injectors. Clean the injectors to resolve the problem. If the problem persists, consult us.

Types of solutions a mechanic can offer

A mechanic knows that an EFI cannot be adjusted to match your car’s engine. It is the engine that has to be matched to EFI. If the engine is working properly, a mechanic can diagnose problems with your car’s electronic fuel injection system. A mechanic will run various tests on the electronic fuel injection system.

Pressure Test

A certain level of fuel pressure is required by your car to start the engine. If the pressure has dropped, a cranking sound will appear. To solve this, a mechanic can perform different pressure tests. For instance, a fuel volume test can determine the volume of gas in the line is sufficient or not. A static pressure test can also be performed to reveal whether the fuel pump is working properly or not.

Fuel Volume Test

A driveability problem may still occur even if the pressure is normal. This can be related to delivery of a minimum fuel volume to the engine. A mechanic can test this using fuel volume test. It measures the volume of fuel delivered to an engine over a certain interval. As a rule, one quart of fuel must be delivered in 30 seconds. If a fuel pump fails to live up to this rule, then the problem lies with the fuel pump. A mechanic might suggest fuel pump replacement.

About Brisbane Car Services

We specialize in electronic fuel injection problems and fuel system problems. We can repair everything from technical fuel injection problems to carburettors. We carry out the required diagnostic work and repair parts such as fuel injectors, fuel pump, fuel tank, fuel filer and pressure regulator. Our ‘A’ grade qualified mechanics can repair any fuel injection problem. We use high quality parts on your car, and at your convenience. If you have no means of transport, we can provide you with prearranged customer drop-off to local shopping centre or courtesy vehicles but booking is essential. You do not get this service in a traditional auto care shop. If you cannot feel a quality differences in our service then do not pay for it. All our work is fully guaranteed and warranted.