Mazda Protege Fuel Injector Replacement Costs

Estimate price near me

Service Location

Customer Ratings

Included for free with this service

Online Booking

Mechanic comes to you

12-month / 12k-mile warranty

Free 50 point safety inspection

Our certified mobile mechanics can come to your home or office 7 days a week between 7 AM and 9 PM.

See availability

Customer Ratings

Fuel Injector Replacement Service

How much does a Fuel Injector Replacement cost?

On average, the cost for a Mazda Protege Fuel Injector Replacement is $679 with $539 for parts and $140 for labor. Prices may vary depending on your location.

Car	Service	Estimate	Shop/Dealer Price
1999 Mazda ProtegeL4-1.8L	Service typeFuel Injector Replacement	Estimate$1786.02	Shop/Dealer Price$2193.86 - $3408.47
1992 Mazda ProtegeL4-1.8L	Service typeFuel Injector Replacement	Estimate$1224.31	Shop/Dealer Price$1495.72 - $2305.84
1995 Mazda ProtegeL4-1.8L	Service typeFuel Injector Replacement	Estimate$1608.38	Shop/Dealer Price$1937.73 - $2917.01
1997 Mazda ProtegeL4-1.5L	Service typeFuel Injector Replacement	Estimate$2455.91	Shop/Dealer Price$3021.39 - $4711.98
1990 Mazda ProtegeL4-1.8L	Service typeFuel Injector Replacement	Estimate$1224.31	Shop/Dealer Price$1497.22 - $2308.46
2000 Mazda ProtegeL4-1.8L	Service typeFuel Injector Replacement	Estimate$1776.11	Shop/Dealer Price$2182.19 - $3395.48
1996 Mazda ProtegeL4-1.5L	Service typeFuel Injector Replacement	Estimate$1782.71	Shop/Dealer Price$2179.91 - $3365.62
2002 Mazda ProtegeL4-2.0L	Service typeFuel Injector Replacement	Estimate$2447.89	Shop/Dealer Price$3021.76 - $4738.76

Show example Mazda Protege Fuel Injector Replacement prices

What is a fuel injector and how does it work?

A fuel injector is a fuel metering device that sprays atomized droplets of fuel in a specific pattern into the engine’s intake manifold or directly into the combustion chamber. The injector has a solenoid and valve within and the operation, or pulsing, of the solenoid is controlled by the powertrain control module (PCM). The PCM controls the solenoid’s “on” time in order to keep the air-fuel ratio optimized while the engine load and operating conditions constantly change. Fuel injectors are usually connected to a fuel rail located on the top of the engine and the fuel rail, in turn, is supplied with fuel under pressure from the fuel pump located in the fuel tank.

When to consider replacing a fuel injector:

Rough idle, loss of power, or misfiring. Poor engine operation has many causes but faults in the fuel injection system, including the fuel injectors, are high on the list of possibilities.
Odor of raw gas or visible leaks. Fuel injectors should not leak fuel into the intake manifold when the car is off. If you notice any fuel odor around your car, the possibility of a leaking fuel injector should be considered. There should be no external leak from a fuel injector. If an externally-leaking injector is suspected, do not start your car due to the fire hazard.
Check engine light. Some fuel injection failures, for example, a faulty solenoid, may cause a trouble code to be set in the PCM and that will cause the check engine light to illuminate. The codes are read and the fuel injector is tested directly, as needed.
Major engine repairs, engine replacement, or lengthy storage. All fuel injectors will have deposits given enough mileage. These deposits can cause an imbalance in the performance of the injectors from cylinder to cylinder. When an engine is already disassembled, or if you are installing a new engine, that is a perfect time to service the injectors as a set. All injectors have tiny internal filter baskets. A professional injector service facility will clean each injector ultrasonically and replace these filters for a relatively low cost.

How do mechanics replace a fuel injector?

Injectors can be serviced once removed from the car or replaced outright with new injectors. If the injectors are serviced, specialized cleaning and test equipment are required. The choice to repair versus replace will depend on exactly what is wrong with the injector as well as customer preference. Either option requires removing the injector from the car and the following procedure is typical:

Once the engine is cold, the pressure within the fuel rail is relieved by briefly running the engine with the fuel pump fuse out.
The upper plenum on the intake manifold is removed along with any cables, hoses, or wiring that restricts access.
The supply and return lines are removed from the fuel rail. The electrical connectors to each fuel injector are unlocked and removed. The fuel rail is then unbolted and removed from the intake manifold.
The injector(s) requiring replacement are removed from the fuel rail, taking care to not allow any debris to enter the exposed openings. An O-ring seal usually holds the injector very firmly in a finely polished bore in the fuel rail.
Using a new O-ring, the serviced or replaced injector is re-inserted into the fuel rail — using engine oil on the O-ring to prevent damaging it. O-rings in this application fit very tight to prevent fuel leaks.
The fuel rail is re-installed and the supply and return lines are re-connected. The plenum is re-installed along with all cables, hoses, or wiring.
Finally, the engine is run, there is a careful check for leaks, and the vehicle is road tested.

Is it safe to drive with a fuel injector problem?

Yes, so long as there is no external leak of fuel from a broken or malfunctioning injector, it is safe to drive the car. However, if the injector is known to be malfunctioning, it can cause engine misfires, excessive emissions or, in the case of a badly leaking injector, can overload and overheat the catalytic converter. Additionally, fuel efficiency will always be diminished if the fuel injectors are not working properly.

When replacing a fuel injector keep in mind:

Using high quality (Tier One) gasoline may reduce deposits on fuel injectors and prolong their life.
If an injector problem develops that requires removal of one injector, the best practice is to remove and service all of the injectors at the same time. That service might involve replacement of the electrically failed injector along with off-the-car cleaning of the remaining injectors. Serving all injectors at once ensures the injector set will be balanced, in terms of flow rates, and in turn promote smooth operation of the engine.
Do not use fuel system cleaning compounds, or procedures, unless such materials are specified by the manufacturer of your car.
On the car cleaning of fuel injectors is not as effective as off-the-car cleaning because injectors have tiny internal filter baskets that should be replaced as part of the process of servicing a fuel injector.

Fast and easy service at your home or office

Backed by 12-month, 12.000-mile guarantee

Meet some of our expert Mazda mechanics

Real customer reviews from Mazda owners like you.

Excellent Rating

(189)

Rating Summary

175

5

1

1

7

175

5

1

1

7

SEE REVIEWS NEAR ME

Bryan

27 years of experience

54 reviews

Bryan

27 years of experience

by Nate

Mazda Protege L4-2.0L - Brake Pads Replacement (Rear) - San Diego, California

Julio

28 years of experience

67 reviews

Julio

28 years of experience

by Chace

Mazda Protege L4-2.0L - Inspection / Diagnostics - Orlando, Florida

Joseph

34 years of experience

540 reviews

Joseph

34 years of experience

by Sudhanshu

Mazda Protege L4-2.0L Turbo - Engine or Transmission Mount Replacement - Dallas, Texas

Would ask to do work on my car again .. if you can find availability.

Ruben

36 years of experience

83 reviews

Ruben

36 years of experience

by Steven

Mazda Protege L4-2.0L - Alternator - Valrico, Florida

Ruben was punctual, professional and very polite and courteous. Obviously a very experienced mechanic. I would trust him with any mechanical issues on any of our vehicles.

Excellent Rating

(189)

Rating Summary

175

5

1

1

7

175

5

1

1

7

SEE REVIEWS NEAR ME

Recent articles & questions

P2649 OBD-II Trouble Code: ‘A’ Rocker Arm Actuator Control Circuit High Bank 1

P2649 P2649 code definition ‘A’ Rocker Arm Actuator Control Circuit High Bank 1 What the P2649 code mean P2649 is an OBD-II code for the engine control module (ECM) detecting the ‘A’ rocker arm actuator control circuit for bank 1...

Symptoms of a Bad or Failing ABS Fluid Level Sensor

Common signs include the ABS Light coming on, unexpected wheel lock from the ABS system failing, and low fluid in the reservoir.

How to Buy a Car After Bankruptcy

Though bankruptcy can greatly impact your life financially, there are still ways to buy a car by managing your payments and having a good cosigner.

What does it mean if the Brake System Light comes on in the dash?

Of all the safety systems built into your car, the brakes are the most important. While the Brake System indicator should come on during startup, it should go out after a few seconds. If it does not, or if it...

Why am I losing compression on cylinder #4 on my 2006 Mazda 6

Hi there. If you are feeling air pressure coming out of the engine in this area then you have a problem with warpage or a crack that is not seen. Once everything is put together and torqued then you should...

Techstream cannot communicate and "Handshake" with RES ECU for 2015 Toyota Venza w/smart key. Help.

I would first refer to the unit LED Diagnostics and Troubleshooting in the installation instructions because it first has to be determined if there is a problem with the install (wiring issues, connections) or configuration. Also, you want to check...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (855) 347-2779 · hi@yourmechanic.com