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Fuel injectors are an important part of your Mazda 6's engine, regulating the amount of pressurised fuel used for each cycle. On average, fuel injectors tend to fail after 80,000 miles, but this can be delayed by following the scheduled maintenance schedule for cleaning the fuel delivery system and injectors. In this article, we will explore how often you should replace your fuel injectors, the signs that they need replacing, and the costs involved.
| Characteristics | Values |
|---|---|
| How often to replace fuel injectors | Every 48,000 miles/2 years |
| Average lifespan | 80,000 miles |
| Cost of replacement | $2400 |
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What You'll Learn
Fuel injectors tend to fail after 80,000 miles
If fuel delivery system symptoms are present, a technician will first conduct a visual inspection. If the issue is not clear, they will connect a computerized scanner to the vehicle to read its sensors. If there is a fuel injector problem, the technician would most likely find that misfires are happening frequently on one cylinder. This is because fuel injectors regulate the amount of pressurised fuel used for each engine cycle. When a fuel injector fails or clogs, engine power is reduced and misfires will occur.
It is rare for all four injectors to need replacing at the same time, as seen in the case of a 2016 Mazda 6, which was quoted $2400 for the replacement of all four fuel injectors. This is an expensive procedure, and it is recommended to get a fair price estimate for fuel injector replacement in your area.
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Fuel injectors require little maintenance
A fuel injection service is recommended every 48,000 miles or two years. This can help prevent the need to replace the fuel injectors, which can be expensive. For a 2016 Mazda 6, the cost of replacing all four fuel injectors is estimated to be $2400.
Fuel injectors regulate the amount of pressurised fuel used for each engine cycle. There is one injector per cylinder in an engine. When a fuel injector fails or clogs, engine power is reduced and misfires will occur. If the problem is bad enough, the vehicle may not even start, making it impossible to drive.
To diagnose a fuel injector problem, a technician will first conduct a visual inspection. If the issue isn't clear, they will connect a computerized scanner to the vehicle to read some of its sensors. If there is a fuel injector problem, the technician would most likely find that misfires are happening frequently on one cylinder.
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Fuel injectors can be replaced for $2400
Fuel injectors regulate the amount of pressurised fuel used for each engine cycle. There is one injector per cylinder in an engine. When a fuel injector fails or clogs, engine power is reduced and misfires will occur. If the problem is bad enough, the vehicle may not even start.
If fuel delivery system symptoms are present, the technician will first conduct a visual inspection. If the issue isn't clear, the technician will connect a computerized scanner to the vehicle to read some of its sensors. If there's a fuel injector problem, the technician would most likely find that misfires are happening frequently on one cylinder.
It is rare that all four injectors need replacing at the same time, so it's likely that there are other issues pertaining to fuel delivery/pressure.
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Fuel injectors can be cleaned to prolong their life
A Mazda dealer tech recommends a fuel injection service every 48,000 miles/2 years. This involves a fuel injection flush, which costs a flat rate of $1.00. The injectors themselves are more expensive, costing $2.50-$3.00.
If fuel delivery system symptoms are present, a technician will first conduct a visual inspection. If the issue isn't clear, they will connect a computerized scanner to the vehicle to read its sensors. If there's a fuel injector problem, the technician would most likely find that misfires are happening frequently on one cylinder.
When a fuel injector fails or clogs, engine power is reduced and misfires will occur.
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Fuel injectors can fail or clog, reducing engine power
If a fuel injector fails or clogs, engine power is reduced and misfires will occur. Fuel injectors tend to fail after 80,000 miles and require little maintenance. To prolong the life of the fuel injectors, follow the scheduled maintenance schedule for cleaning the fuel delivery system and injectors. If fuel delivery system symptoms are present, the technician will first conduct a visual inspection. If the issue isn't clear after a physical inspection, the technician will connect a computerized scanner to the vehicle to read some of its sensors.
It is rare for all four injectors to need replacing at the same time. It is more likely that there are other issues pertaining to fuel delivery/pressure. It is also rare for fuel injectors to need replacing at all. One Mazda dealer tech commented that they quote out a fuel injection service every 48K/2yr.
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Frequently asked questions
Fuel injectors tend to fail after 80,000 miles and require little maintenance. To prolong their life, follow the scheduled maintenance schedule for cleaning the fuel delivery system and injectors.
If the problem is bad enough, the vehicle may not start. Other signs include reduced engine power and frequent misfires on one cylinder.
This will depend on your shop rate, but one source suggests that $2400 to replace all four fuel injectors in a 2016 Mazda 6 is too expensive.
Fuel injectors regulate the amount of pressurised fuel used for each engine cycle. There is one injector per cylinder in an engine. Each time an intake stroke occurs in the engine, the vehicle's computer will send a signal to the fuel injectors, requesting they spray fuel.
