Mercedes-Benz CLK320 Fuel Injector Replacement at your home or office.

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received a Fuel Injector Replacement.
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$871.88 - $1,153.27

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Fuel Injector Replacement Estimate for Mercedes-Benz CLK320

Mercedes-Benz CLK320 Fuel Injector Replacement costs $974 on average.

CarServiceEstimateShop/Dealer Price
2003 Mercedes-Benz CLK320V6-3.2LService typeFuel Injector ReplacementEstimate$1608.78Shop/Dealer Price$2010.03 - $3129.86
2001 Mercedes-Benz CLK320V6-3.2LService typeFuel Injector ReplacementEstimate$1685.27Shop/Dealer Price$2104.89 - $3238.50
2002 Mercedes-Benz CLK320V6-3.2LService typeFuel Injector ReplacementEstimate$1685.27Shop/Dealer Price$2105.17 - $3238.99
2004 Mercedes-Benz CLK320V6-3.2LService typeFuel Injector ReplacementEstimate$1617.78Shop/Dealer Price$2016.77 - $3134.89
1999 Mercedes-Benz CLK320V6-3.2LService typeFuel Injector ReplacementEstimate$2050.07Shop/Dealer Price$2569.11 - $3982.48
1998 Mercedes-Benz CLK320V6-3.2LService typeFuel Injector ReplacementEstimate$2050.07Shop/Dealer Price$2555.40 - $3958.48
2005 Mercedes-Benz CLK320V6-3.2LService typeFuel Injector ReplacementEstimate$1608.78Shop/Dealer Price$2000.09 - $3112.47
2000 Mercedes-Benz CLK320V6-3.2LService typeFuel Injector ReplacementEstimate$1698.77Shop/Dealer Price$2111.89 - $3240.61
Show example Mercedes-Benz CLK320 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.

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Meet some of our expert Mercedes-Benz mechanics

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YourMechanic Mercedes-Benz CLK320 Service

Average Rating

4.8/5

Number of Reviews

79

Rating Summary
71
4
1
0
3
71
4
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Brandon

16 years of experience
318 reviews
Brandon
16 years of experience
Mercedes-Benz CLK320 - Power Window Switch Replacement (Driver Side Front) - Raleigh, North Carolina
Brandon was right on time, he was very polite and professional and went straight to the problem and fixed it in a short time, he checked all my fluids and advised me that I should flush my Transmission Fluid at my next Oilchange. I recommend Brandon highly and will request him for my next Service. Job well done! Thank you Brandon.

Tien

21 years of experience
901 reviews
Tien
21 years of experience
Mercedes-Benz CLK320 - Oil Change - San Lorenzo, California
This is my third experience with Tien and it's always been a great one. He's professional, knowledgeable, and honest. He came on time, got the work done and shared a quote for my next service. He takes pride in doing a good job and I appreciate that.

Mung

19 years of experience
31 reviews
Mung
19 years of experience
Mercedes-Benz CLK320 - Wheel Bearings Replacement (Driver Side Front) - Tulsa, Oklahoma
Mung was very Friendly and Knowledgeable.

Thomas

11 years of experience
73 reviews
Thomas
11 years of experience
Mercedes-Benz CLK320 - Coolant Reservoir - Orlando, Florida
Knowledge smart and a fast work. Keeps you update step by step of the process

Excellent Rating


YourMechanic Mercedes-Benz CLK320 Service

Average Rating

4.8/5

Number of Reviews

79

Rating Summary
71
4
1
0
3
71
4
1
0
3
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