A Guide to Replacing Fuel Injectors on a 2013-2018 Ford Focus
If your Focus is running rough, stalling, or getting poor gas mileage, your fuel injectors could be the problem.
- First, verify if your car is affected by the Canister Purge Valve recall (Ford 18S32), as its symptoms mimic injector failure.
- Bosch is an original equipment supplier to Ford and offers the best combination of quality and value for aftermarket injectors.
- Due to the labor involved in accessing the injectors, it is highly recommended to replace all four at the same time.
- The job requires removing the intake manifold, making it a moderately difficult task best suited for experienced DIYers or a professional mechanic.
Symptoms of a Failing Fuel Injector
When a fuel injector starts to fail, it can cause a range of noticeable problems. Because the 2013-2018 Focus uses a direct injection system, injectors can get clogged with carbon deposits over time. An injector can also get stuck open or closed due to electrical or mechanical failure. Common symptoms include a rough idle, engine misfires (which can feel like a stutter or vibration), poor fuel economy, and a general loss of power and acceleration. 🎬 Watch: 13 common signs of a clogged fuel injector In more serious cases, a leaking injector can cause a fuel smell or even allow gasoline to mix with your engine oil, which can cause major engine damage.
IMPORTANT: Check for Recall 18S32 First!
Before you replace your fuel injectors, it is critical to know about a major recall for 2012-2018 Ford Focus models with the 2.0L engine (NHTSA ID: 18V-735, Ford Recall: 18S32). This recall is for a faulty Canister Purge Valve (CPV), not the fuel injectors. However, the symptoms of a bad CPV—stalling, rough running, and difficulty starting—are nearly identical to bad fuel injector symptoms. A faulty CPV can create a vacuum in the fuel system and even deform the gas tank. Many owners have replaced injectors only to find the CPV was the real problem. Have a Ford dealer check if this recall work has been performed on your vehicle. It could save you hundreds of dollars.
🎬 See how a stuck purge valve mimics injector failureChoosing the Right Aftermarket Fuel Injector
When shopping for a new fuel injector, you have several options that balance cost and quality. For a critical part like a GDI injector, choosing a quality brand is important for long-term reliability.
Tier 1: OEM and OE-Equivalent Brands
- Motorcraft: This is Ford's own brand and the original part that came with your car. It offers a guaranteed fit and performance but comes at the highest cost.
- Bosch: Bosch is a massive German parts manufacturer that is the original equipment supplier for many Ford parts, including fuel injectors. Often, the Bosch aftermarket part is identical to the Motorcraft part, just in a different box. It is widely considered the most reliable and highest-quality aftermarket option, providing OE performance at a lower price than the dealer.
Tier 2: Quality Aftermarket Brands
- Standard Ignition (SMP): Standard is a well-known aftermarket brand that has been around for a long time. Their parts are generally considered to be of good quality and are a step up from generic, no-name brands. However, some user reviews are mixed, with occasional reports of parts failing early. They can be a good middle-ground option if Bosch is not in your budget.
Tier 3: Budget and Remanufactured Options
- GBR Fuel Injection (GB Remanufacturing): This brand primarily offers remanufactured fuel injectors. Remanufactured parts are used OEM cores that have been cleaned, serviced, and tested. While they can be a very cost-effective solution, their quality and lifespan can be less consistent than a new part from Bosch or Standard Ignition.
| Part / Service | Estimated Cost |
|---|---|
| New OEM Injector (Single) | $150 - $250+ |
| New Aftermarket Injector (Single) | $40 - $170 |
| Shop Labor | $226 - $332 |
| Total Professional Replacement (All 4) | $500 - $800+ |
Frequently Asked Questions (FAQ)
Can I replace just one fuel injector?
While you can replace just the one faulty injector, it is generally recommended to replace them as a full set. The injectors in your engine have all operated for the same amount of time and under the same conditions. If one has failed, the others may not be far behind. Replacing them all at once ensures balanced fuel flow and can prevent another repair job in the near future.
Is replacing the fuel injectors a DIY job?
For the 2013-2018 Focus, this is a moderately difficult job. The fuel injectors are located underneath the intake manifold, which must be removed for access. The process also involves working with the high-pressure fuel system, which requires care to depressurize safely. While possible for an experienced DIY mechanic with the right tools, it is not recommended for beginners.
🎬 Watch this step-by-step guide to replacing your fuel injectorsDo I need to program the new injectors?
For the 2.0L GDI engine in the Focus, new fuel injectors do not typically require programming or coding to the vehicle's computer (ECU). They should function properly upon installation. However, it is always a good practice to clear any old fault codes with an OBD2 scanner after the repair is complete.
What causes fuel injectors to fail on this car?
The most common cause of failure for GDI injectors is carbon buildup on the nozzle tip. This buildup disrupts the spray pattern, leading to poor performance. Over time, internal components can also wear out or fail from heat and high pressure. Using high-quality gasoline and occasionally using a reputable fuel system cleaner can help prolong their life.
Helpful Videos
Technical Specifications
OEM Part Numbers: CM5245
Fits 2.0L GDI and 2.0L GTDI engines. Example Aftermarket Part Number: Bosch 62815.
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Ford Focus:
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- Symptoms of a Failing Fuel Injector
- IMPORTANT: Check for Recall 18S32 First!
- Choosing the Right Aftermarket Fuel Injector
- Tier 1: OEM and OE-Equivalent Brands
- Tier 2: Quality Aftermarket Brands
- Tier 3: Budget and Remanufactured Options
- Frequently Asked Questions (FAQ)
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