Mercedes-Benz CL500 Fuel Injector Replacement at your home or office.

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$1,454.18 - $1,657.18

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Fuel Injector Replacement Estimate for Mercedes-Benz CL500

Mercedes-Benz CL500 Fuel Injector Replacement costs $1579 on average.

CarServiceEstimateShop/Dealer Price
1999 Mercedes-Benz CL500V8-5.0LService typeFuel Injector ReplacementEstimate$2918.90Shop/Dealer Price$3647.74 - $5754.97
2001 Mercedes-Benz CL500V8-5.0LService typeFuel Injector ReplacementEstimate$2891.37Shop/Dealer Price$3612.33 - $5636.02
2003 Mercedes-Benz CL500V8-5.0LService typeFuel Injector ReplacementEstimate$2891.37Shop/Dealer Price$3612.64 - $5636.56
2004 Mercedes-Benz CL500V8-5.0LService typeFuel Injector ReplacementEstimate$2906.37Shop/Dealer Price$3623.86 - $5644.95
2005 Mercedes-Benz CL500V8-5.0LService typeFuel Injector ReplacementEstimate$2976.27Shop/Dealer Price$3727.58 - $5821.80
2002 Mercedes-Benz CL500V8-5.0LService typeFuel Injector ReplacementEstimate$2891.37Shop/Dealer Price$3606.22 - $5625.33
1998 Mercedes-Benz CL500V8-5.0LService typeFuel Injector ReplacementEstimate$2918.90Shop/Dealer Price$3638.35 - $5738.55
2006 Mercedes-Benz CL500V8-5.0LService typeFuel Injector ReplacementEstimate$2991.27Shop/Dealer Price$3726.22 - $5808.16
Show example Mercedes-Benz CL500 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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YourMechanic Mercedes-Benz CL500 Service

Average Rating

4.6/5

Number of Reviews

14

Rating Summary
12
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Ralph

36 years of experience
124 reviews
Ralph
36 years of experience
Mercedes-Benz CL500 - Water Pump - Tacoma, Washington
Professional.

Robert

12 years of experience
4 reviews
Robert
12 years of experience
Mercedes-Benz CL500 - Radiator - Houston, Texas
If you read nothing beyond this first sentence, just know that Robert is magnificent! On my repair day, Robert showed up promptly at the requested appointment time, sending several heads-up texts prior to his visit. Upon arrival, he very kindly and pleasantly introduced himself, then immediately proceeded to review the requested service and closely inspected the vehicle before bringing out his heavy duty tools. Radiator replacement can be tricky, but Robert tackled it with ease and with a highly professional methodology which can only come from longtime mechanical knowledge and experience. Not only was Robert careful to keep the job site clean and orderly, but he also took delicate care in disassembling components in and around the engine. Once the radiator was successfully replaced and the coolant levels and functionality restored to factory specs, Robert went above and beyond by scanning the vehicle computer for any fault codes, etc. He diagnosed a misfire and tested some ignition components, after which he very kindly suggested what needed to be repaired in the near future. Overall, I will gladly admit that I am very satisfied with the repair work received by Robert. I cannot thank him and YourMechanic enough, as the service received was excellent, affordable, precise, professional and highly convenient. I would highly recommend Robert as a mechanic, as his knowledge, insights, technique and professionalism are without equal.

Ralph

36 years of experience
124 reviews
Ralph
36 years of experience
Mercedes-Benz CL500 - Brake Pads Replacement (Front, Rear) - Tacoma, Washington
Ralph takes his time in orde to do the job right. Very professional.

David

14 years of experience
597 reviews
David
14 years of experience
Mercedes-Benz CL500 - Power steering fluid is leaking - Pittsburg, California
Very respectful,honest,and highly experienced,and professional,5 

Excellent Rating


YourMechanic Mercedes-Benz CL500 Service

Average Rating

4.6/5

Number of Reviews

14

Rating Summary
12
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Red-stars EXCELLENT RATING ON
Number of Mercedes-Benz CL500 services completed
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services done by our mechanics
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