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For your vehicle’s engine to run effectively and smoothly, it needs to receive the correct/right quantity mixture of fuel/air, taking into consideration its range of demand.
Carburettors were traditionally used in the control of fuel/air mixture. These instruments are not perfect because; one vehicle carburettor supplying an engine with four-cylinder cannot provide each cylinder with the same fuel/air mixture due to some cylinders being away from your vehicle’s carburettor.
In modern days, cars have with fuel-injected engines. This means that their fuel is delivered inaccurate bursts. These types of fuel-injected engines are more powerful and efficient than the traditional ones that used carburettors. Another merit is that the fuel-injected engine is more economical and environmentally friendly than the one using carburettors.
The injector through which fuel is sprayed in your vehicle is screwed into the cylinder head or in both inlet manifolds, angled in a way that the nozzle is first in such a manner that the fuel fires to the inlet valves.
The traditional kind of injection systems and are mechanically controlled. They are also known as petrol injection. Mechanical regulators assembly in mechanical injection controls the fuel flow of the vehicle.
This electronic type of system has come to replace the mechanical system.
The process of either testing a fuel injector, throttle body injection system, or electronic fuel injection is not as hard as it may seem. Since these injectors face almost the same problem, you can troubleshoot them by use of some simple tools.
A multimeter will be an essential tool when troubleshooting your fuel injection. A multimeter is an all-out combination of different meter types that measures the electronic quantities in any of your electronic projects.
A multimeter can measure various electronic measurements like;
Selections of voltage, current and resistance have different symbols,
A multimeter also has some metric prefixes commonly used,
Multimeters are also of two different types, namely:
The Digital multimeter is of two different categories:
Note; When troubleshooting using a digital multimeter on your electronic components car, it is advisable to make sure you always use the (minimum) 10 Megohm impedance multimeter to avoid circuit damage.
In our cases, we are measuring the resistance of the fuel injector using a digital multimeter, below are a few steps to follow;
If the meter reads in your multimeter an infinite resistance, then the coil of the injector is probably opened.
If your multimeter reading is moving/ jumping all over, then your coil is opened.
If your multimeter is reading zero resistance, then your coil probably has a short circuit.
To be sure and more accurate, after using a multimeter, you can also conduct a posttest using a stethoscope.
With this few and simple steps, you can wave goodbye to all your vehicle issues associated with the fuel injection.
With the above information, I am now certain you can be in a position to test your fuel injector with a multimer. make sure to always maintain safety precautions.
Just a random guy who likes to build things. Providing tool knowledge, appliance/device testing tips, and DIY project info in an easy-to read & non-intimidating style.