Injector calibration: definition, usefulness and price
Content
The calibration of a nozzle refers to its spring. In fact, it must have a sufficient opening to release the required amount of fuel under the pressure of the pump. The calibration required for good fuel injection must be correctly adjusted. In this article, you will learn everything you need to know about injector calibration: its definition, its usefulness, when to carry it out, and how much it costs!
🚗 What is injector calibration?
Until the 1960s, nozzle calibration could not be adjusted. While currently, if an injector is malfunctioning due to suboptimal calibration of its spring, it can be adjusted by a professional.
Mechanical nozzles work How valve security, that is, by means of a spring having a certain calibration. Thereby, this calibration will determine the opening threshold of the washers located at the ends of the injector. This will place a certain amount of fuel, which will then be pressurized by the pump. Taring also allows check the tightness injector and avoid the risk of fuel leakage on the latter.
To adjust the injector setting, you must use calibration control stand which will support the various elements of the injector while measuring its pressure, which will be expressed in bars.
Calibration values will be different depending on the car model and its engine (petrol or diesel).
Un injector calibration table Before performing this maneuver, it is necessary to consult, it contains the following information:
- Pump type;
- Injection pressure;
- Injector type;
- Suction valve flow
- Fuel supply pressure;
- Piston diameter and stroke;
- Nozzle part number;
- Engine's type;
- The amount of injection advance.
💡 Why is it necessary to calibrate the nozzles?
Calibrating the injectors is essential to ensure the health of your vehicle's engine. Indeed, if the tare parameters are correct, the optimal amount of fuel will be injected and sprayed inside combustion chambers motor. Thus, it is a guarantee of correct combustion between air and fuel in cylinders.
If the calibration is miscalculated, it will have a direct impact on your engine's performance and fuel consumption. fuel as well as driving comfort. It can also damage the injector due to incorrect calibration settings and cause premature clogging. calamine.
Calibration of injectors is very important for mechanical models of old cars, but also for electronic models. Indeed, even if the amount of fuel is calculated electronically, spring system is always present inside the injector to allow it to spray diesel or gasoline into the engine cylinder.
📅 When should the nozzles be calibrated?
The frequency of injector calibration will vary from one car model to another and mainly depending on its injection system (direct or indirect). On average, this should be achieved every 100 kilometers.
However, if you notice certain warning signs of a calibration problem, you will need to intervene as soon as possible. These manifestations can take the following forms:
- There is a fuel leak in one or more injectors;
- The engine does not run normally and is losing power;
- Fuel consumption is increasing;
- The engine is difficult to start.
In such situations, you will have to take your vehicle to a professional auto mechanic workshop so that it can analyze the cause of the malfunction. There can be several of them, it can be a bad calibration, a faulty nozzle seal or an HS nozzle.
💸 How much does it cost to calibrate an injector?
The cost of calibrating injectors is the same for a diesel or gasoline vehicle. This operation consists in changing calibration washers and adjusting the spring pressure on the calibration bench. For parts, spacer washers are sold between 15 and 20 €... Then it will be necessary to add the cost of labor, which increases between 25 € and 100 €.
This operation does not require more than one hour of mechanic work and you will be billed for a total of between 40 € and 120 € depending on the selected garage and its geographic location.
If you want to fix your injector calibration, find a reliable garage in a few clicks with our online comparator. This will allow you to compare the prices of many garages around your home and check their reputation by consulting the opinions of other customers who have already approached their service for car repairs!
