Mazda 929 Fuel Injector Replacement at your home or office.

Our mobile mechanics offer services 7 days a week. Upfront and transparent pricing.

Estimate price near me

Service Location

Customer Ratings

(4)

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.

Customer Ratings

(4)

Fuel Injector Replacement Service

How much does a Fuel Injector Replacement cost?

On average, the cost for a Mazda 929 Fuel Injector Replacement is $1259 with $979 for parts and $280 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
1992 Mazda 929V6-3.0LService typeFuel Injector ReplacementEstimate$3306.50Shop/Dealer Price$4062.83 - $6315.60
1990 Mazda 929V6-3.0LService typeFuel Injector ReplacementEstimate$2322.98Shop/Dealer Price$2817.06 - $4289.00
1993 Mazda 929V6-3.0LService typeFuel Injector ReplacementEstimate$3288.48Shop/Dealer Price$4041.32 - $6291.49
1991 Mazda 929V6-3.0LService typeFuel Injector ReplacementEstimate$2322.98Shop/Dealer Price$2817.12 - $4289.10
1995 Mazda 929V6-3.0LService typeFuel Injector ReplacementEstimate$3288.48Shop/Dealer Price$4044.27 - $6296.64
1994 Mazda 929V6-3.0LService typeFuel Injector ReplacementEstimate$3288.48Shop/Dealer Price$4041.60 - $6291.97
Show example Mazda 929 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

(4)

Rating Summary
3
0
1
0
0
3
0
1
0
0

Mohammed

10 years of experience
152 reviews
Mohammed
10 years of experience
Mazda 929 V6-3.0L - Alternator Repair - Raleigh, North Carolina
Very professional, extremely courteous

Doug

35 years of experience
139 reviews
Doug
35 years of experience
Mazda 929 V6-3.0L - Oxygen Sensor Replacement (Front/Upper/Upstream) - Corona, California
DXCELLENT AND VERY KNOWLEDGEABLE

Jose

18 years of experience
154 reviews
Jose
18 years of experience
Mazda 929 V6-3.0L - Car Heater Hoses Replacement - Las Vegas, Nevada
Excellent job completed.

Attila

20 years of experience
1104 reviews
Attila
20 years of experience
Mazda CX-9 V6-3.7L - Fuel Injector - Ho Ho Kus, New Jersey
Very detailed. Takes the time to explain every aspect.

Excellent Rating

(4)

Rating Summary
3
0
1
0
0
3
0
1
0
0
Number of Mazda Fuel Injector Replacement services completed
44+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mazda MECHANICS
1100+
experts on our platform

Recent articles & questions

How to Transfer a Car Title in Utah
In In the state of Utah, any change in vehicle ownership requires a title transfer. This is the process of removing the title from the previous owner’s name and putting it into the current owner’s name. Title transfers must be...
The Guide To Colored Curb Zones in Colorado
Colorado Colorado parking laws: understanding the basics Many drivers in Colorado are well aware of the regulations and laws when they are out driving on the roads. However, they may not be quite as familiar with the laws regarding parking....
How to Buy a Personalized License Plate in Georgia
Personalized Personalized license plates are a popular addition to your vehicle to make it your own. They offer a little extra detail that can: Give others a snapshot of what’s important to you Set your car apart in the parking...

My car is shutting down in low gear/idle immediately after transmission rebuild & minor updated engine parts

First, I am sorry to hear that you are having such a poor experience with this repair. Unfortunately, there is only one way to know if your car is ready to be driven without any problems - you will need...

car shaking randomly at various times

Hi there. Typically when you don't have a fuel or ignition system component failure, a vacuum leak or loose motor mounts will be the source of this type of vibration. If you're having this vibration all the time, I would...

Bluish white smoke during smog, did not pass. Does stop smoke fix the problem?

Hi there. In most cases, bluish white smoke is caused by damaged piston rings, or damaged cylinder head valve guides and is referred to as oil blow back. I am not a believer in "stop smoke" products, as they typically...

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