Mercedes-Benz SLK55 AMG 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

(7)

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

(7)

Fuel Injector Replacement Estimate for Mercedes-Benz SLK55 AMG

Mercedes-Benz SLK55 AMG Fuel Injector Replacement costs $2754 on average.

CarServiceEstimateShop/Dealer Price
2012 Mercedes-Benz SLK55 AMGV8-5.5LService typeFuel Injector ReplacementEstimate$9440.90Shop/Dealer Price$11814.34 - $18781.18
2006 Mercedes-Benz SLK55 AMGV8-5.5LService typeFuel Injector ReplacementEstimate$2994.60Shop/Dealer Price$3767.56 - $5932.75
2010 Mercedes-Benz SLK55 AMGV8-5.5LService typeFuel Injector ReplacementEstimate$2713.00Shop/Dealer Price$3415.55 - $5369.54
2013 Mercedes-Benz SLK55 AMGV8-5.5LService typeFuel Injector ReplacementEstimate$9396.90Shop/Dealer Price$11770.30 - $18737.12
2015 Mercedes-Benz SLK55 AMGV8-5.5LService typeFuel Injector ReplacementEstimate$9470.70Shop/Dealer Price$11862.76 - $18885.09
2016 Mercedes-Benz SLK55 AMGV8-5.5LService typeFuel Injector ReplacementEstimate$5927.02Shop/Dealer Price$7433.07 - $11797.58
2007 Mercedes-Benz SLK55 AMGV8-5.5LService typeFuel Injector ReplacementEstimate$2724.00Shop/Dealer Price$3425.80 - $5379.23
2014 Mercedes-Benz SLK55 AMGV8-5.5LService typeFuel Injector ReplacementEstimate$9407.90Shop/Dealer Price$11782.73 - $18750.62
Show example Mercedes-Benz SLK55 AMG Fuel Injector Replacement prices

Fuel Injector Replacement Service

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

(7)

Rating Summary
6
0
0
1
0
6
0
0
1
0

Michael

16 years of experience
56 reviews
Michael
16 years of experience
Mercedes-Benz SLK55 AMG V8-5.5L - Oil Change - Baytown, Texas
Great

John

27 years of experience
979 reviews
John
27 years of experience
Mercedes-Benz SLK55 AMG V8-5.5L - car is damaged - Baytown, Texas
John was 100% , very professional and helpful! I would recommend him to anyone needed car help!

Chris

22 years of experience
2174 reviews
Chris
22 years of experience
Mercedes-Benz SLK55 AMG V8-5.5L - Check Engine Light is on - Corona, California
Knowledgeable. Was able to determine the problem fast.

David

10 years of experience
193 reviews
David
10 years of experience
Mercedes-Benz SLK55 AMG V8-5.5L - Oil Change - Philadelphia, Pennsylvania
I got a good feeling about the service and David. He was prompt courteous friendly professional and insightful about the particulars of my specific vehicle.

Excellent Rating

(7)

Rating Summary
6
0
0
1
0
6
0
0
1
0
Number of Mercedes-Benz SLK55 AMG services completed
77+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
1000+
experts on our platform

Recent articles & questions

Symptoms of a Bad or Failing Front Output Shaft Oil Seal
If your car has all- or four-wheel drive and there is noise or fluid leaking from the transfer case, consider replacing the front output shaft seal.
Symptoms of a Bad or Failing Water Pump
Common signs include coolant leaks at the front-center of the car, loose water pump pulley, overheating engine, and steam coming from the radiator.
P0353 OBD-II Trouble Code: Ignition Coil C Primary/Secondary Circuit Malfunction
P0353 means a malfunction has been found specifically in ignition coil C. Problems may include broken connector locks and loose connection at coil.

My car keeps blowing oil sending units

Hi there - I suspect you have a blown head gasket. Having coolant in the oil is a classic blown head gasket symptom, and having very high oil pressure means combustion pressure is being leaked into the oil passages. This...

AC compressor failure

Hello. Yes, all of the things listed are usually recommended when replacing an AC compressor. AC systems are very sealed and pressurized, and taking the precaution to replace the associated components helps prevent any premature failure's of any sort. The...

Engine jumps up in RPM when unnecessary.

Hi there. Typically when you rapidly accelerate while you're driving, the transmission will "down shift" into a lower gear to assist in the acceleration; which increases the engine RPM's until the transmission shifts into the higher gear. However, you shouldn't...

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