Mazda 626 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 626 Fuel Injector Replacement is $792 with $652 for parts and $140 for labor. Prices may vary depending on your location.

Car	Service	Estimate	Shop/Dealer Price
1992 Mazda 626L4-2.2L	Service typeFuel Injector Replacement	Estimate$1566.82	Shop/Dealer Price$1898.77 - $2880.85
1995 Mazda 626L4-2.0L	Service typeFuel Injector Replacement	Estimate$2590.33	Shop/Dealer Price$3192.85 - $4995.04
1990 Mazda 626L4-2.2L	Service typeFuel Injector Replacement	Estimate$1551.50	Shop/Dealer Price$1880.49 - $2860.35
1996 Mazda 626V6-2.5L	Service typeFuel Injector Replacement	Estimate$3684.36	Shop/Dealer Price$4536.17 - $7083.24
1993 Mazda 626L4-2.0L	Service typeFuel Injector Replacement	Estimate$2546.53	Shop/Dealer Price$3150.00 - $4952.90
2001 Mazda 626L4-2.0L	Service typeFuel Injector Replacement	Estimate$1808.69	Shop/Dealer Price$2216.01 - $3432.13
1998 Mazda 626L4-2.0L	Service typeFuel Injector Replacement	Estimate$2597.09	Shop/Dealer Price$3201.35 - $5008.65
1994 Mazda 626L4-2.0L	Service typeFuel Injector Replacement	Estimate$2546.53	Shop/Dealer Price$3148.52 - $4950.32

Show example Mazda 626 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

(142)

Rating Summary

129

10

2

0

1

129

10

2

0

1

SEE REVIEWS NEAR ME

Peter

44 years of experience

1397 reviews

Peter

44 years of experience

by Bill

Mazda 626 V6-2.5L - Car is not starting - Anthem, Arizona

On time, knowledgeable and fast! What more could one ask for.

Peter

37 years of experience

346 reviews

Peter

37 years of experience

by Gabriella

Mazda 626 V6-2.5L - Car is not starting - San Diego, California

The first appointment I booked was with Mario for 5 pm. He phoned me at 5:10 and told me he was running a little late, but would be there shortly. He arrived at 6:55 pm. Very unprofessional.

Dan

40 years of experience

1080 reviews

Dan

40 years of experience

by Tracey

Mazda 626 L4-2.0L - Alternator - Dacula, Georgia

Great

Rocco

23 years of experience

302 reviews

Rocco

23 years of experience

by Matt

Mazda 626 L4-2.0L - Cooling System Flush - Lakewood, California

I've booked Rocco twice now and both times he has shown very professional behavior and passed down practical knowledge. Would recommend 10/10

Excellent Rating

(142)

Rating Summary

129

10

2

0

1

129

10

2

0

1

SEE REVIEWS NEAR ME

Recent articles & questions

Symptoms of a Bad or Failing Variable Valve Timing (VVT) Solenoid

Common signs of a faulty VVT solenoid include the Check Engine Light coming on, dirty engine oil, rough engine idle, and decreased fuel economy.

10 Best Stores to Buy Auto Parts in Dallas, Texas

Automotive technicians rely on auto parts stores to add and replace car parts. The best auto parts shop in Dallas is AutoZone.

How Long Does a Power Brake Booster Last?

When When you press the brake pedal, your car slows down and eventually stops. Most of us put little more thought into it. We know that our brake pads need to be replaced periodically, and we’ll probably need to have...

Car won't go forward and is leaking - 1992 Mercedes Benz 300TE

Hey there. If the line is broken, then it has to be replaced. The line is a special transmission cooler line. You may need to use dealer supplied parts for this repair only. The transmission should not be tried to...

My car is smoking but not overheating, and burns a lot of oil.

Hi and thank you for contacting YourMechanic. There are two things to look for. First is the exhaust smoke blue? If it is that indicates that the piston rings are worn and the engine needs to be rebuilt. Oil is...

I am an old fart and i did not know that there was a difference between synthetic oil and the old regular oil. I put the old type of oil in my car when it needed it. then I was told that My car was suppose to be using the synthetic. Now my car is leaking. Is this why. J looked under the engine and it appears that some of the engine block screws are where its leaking. The car is a 2008 BMW 650I. Did I really mess it up?

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