Mercedes-Benz 190E 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 Mercedes-Benz 190E Fuel Injector Replacement is $302 with $162 for parts and $140 for labor. Prices may vary depending on your location.

Car	Service	Estimate	Shop/Dealer Price
1992 Mercedes-Benz 190EL4-2.3L	Service typeFuel Injector Replacement	Estimate$694.08	Shop/Dealer Price$835.15 - $1244.19
1990 Mercedes-Benz 190EL6-2.6L	Service typeFuel Injector Replacement	Estimate$932.35	Shop/Dealer Price$1132.15 - $1724.33
1993 Mercedes-Benz 190EL6-2.6L	Service typeFuel Injector Replacement	Estimate$932.35	Shop/Dealer Price$1132.19 - $1724.40
1993 Mercedes-Benz 190EL4-2.3L	Service typeFuel Injector Replacement	Estimate$685.07	Shop/Dealer Price$823.09 - $1229.84
1991 Mercedes-Benz 190EL4-2.3L	Service typeFuel Injector Replacement	Estimate$685.07	Shop/Dealer Price$825.67 - $1234.35
1991 Mercedes-Benz 190EL6-2.6L	Service typeFuel Injector Replacement	Estimate$932.35	Shop/Dealer Price$1132.44 - $1724.83
1992 Mercedes-Benz 190EL6-2.6L	Service typeFuel Injector Replacement	Estimate$932.35	Shop/Dealer Price$1132.22 - $1724.45

Show example Mercedes-Benz 190E 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 Mercedes-Benz mechanics

Real customer reviews from Mercedes-Benz owners like you.

Excellent Rating

(24)

Rating Summary

21

2

1

0

0

21

2

1

0

0

SEE REVIEWS NEAR ME

Nezar

27 years of experience

102 reviews

Nezar

27 years of experience

by NORMAN

Mercedes-Benz 190E L6-2.6L - Fuel Injector - Fort Lauderdale, Florida

Super Nice and knowledgeable ! He came -He saw - He repaired ! we loved him :)

Darin

21 years of experience

3 reviews

Darin

21 years of experience

by Dante

Mercedes-Benz 190E L6-2.6L - Starter - San Jose, California

He's punctual and very satisfied with his work.

Simon

28 years of experience

378 reviews

Simon

28 years of experience

by Margaret

Mercedes-Benz 190E L4-2.3L - Oil Change - Washington, District of Columbia

He was on time, courteous, efficient, speedy, and advisable about certain things to be aware of for future service. Please send him every time, as he seems to be very much aware of the mechanics and engineering of my car more so than all the others who have serviced it...He pleases me utmost. in the professional service I requests.

Napoleon

28 years of experience

147 reviews

Request Napoleon

Napoleon

28 years of experience

Request Napoleon

by Ruth

Mercedes-Benz 190E L4-2.3L - 75 Point Safety Inspection - Beverly Hills, California

Arrived early and addressed three issues: 2 windows and oil leak. Awaiting parts for repairs.

Excellent Rating

(24)

Rating Summary

21

2

1

0

0

21

2

1

0

0

SEE REVIEWS NEAR ME

Recent articles & questions

How to Buy a Good Quality Rotor

The The rotor exists to send power from your ignition coil over to your spark plugs – which make sure that your plugs ignite to start the fuel combustion process. Each time it goes around, the metal parts of the...

P0803 OBD-II Trouble Code: Upshift Solenoid Control Circuit Malfunction

P0803 P0803 code definition The P0803 code is known as the 1-4 Upshift (Skip Shift) Solenoid Control Circuit Malfunction. What the P0803 code means The P0803 fault code is only found in manual vehicles, because it’s part of the system...

How Long Does a Horn Last?

For For most car owners, staying safe while on the roadways is a top priority. While the roadways can be a dangerous place, there are a variety of things on your car that are there to offer a higher degree...

Metal noise when turning left.

The noise over bumps could be related to the steering rack or mounts. You have already replaced everything else. As for the screeching noise, there is a chance that the brake dust shield is rubbing the rotor The shields are...

Error code SRS system

Hello. The multitude of codes that the engine has leads me to believe that it was subject to flooding or submersion. The connectors and circuits of jeeps usually dry out because submersion is kind of what Jeeps are meant for, but...

I don't know how to turn on my fog lights.

The fog light switch (https://i.ytimg.com/vi/77zyWjp4YPU/hqdefault.jpg) is on the left turn signal lever close to steering column the lever rotates to turn on the fog lights.

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 (844) 997-3624 · hi@yourmechanic.com