Mercedes-Benz E430 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

(27)

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

(27)

Fuel Injector Replacement Service

How much does a Fuel Injector Replacement cost?

On average, the cost for a Mercedes-Benz E430 Fuel Injector Replacement is $1555 with $1308 for parts and $247 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2001 Mercedes-Benz E430V8-4.3LService typeFuel Injector ReplacementEstimate$2914.71Shop/Dealer Price$3614.16 - $5610.09
2002 Mercedes-Benz E430V8-4.3LService typeFuel Injector ReplacementEstimate$2862.71Shop/Dealer Price$3562.24 - $5558.23
2000 Mercedes-Benz E430V8-4.3LService typeFuel Injector ReplacementEstimate$2965.11Shop/Dealer Price$3690.23 - $5763.02
1998 Mercedes-Benz E430V8-4.3LService typeFuel Injector ReplacementEstimate$2965.11Shop/Dealer Price$3690.13 - $5762.84
1999 Mercedes-Benz E430V8-4.3LService typeFuel Injector ReplacementEstimate$2965.11Shop/Dealer Price$3690.30 - $5763.15
Show example Mercedes-Benz E430 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

(27)

Rating Summary
25
2
0
0
0
25
2
0
0
0

David

27 years of experience
182 reviews
David
27 years of experience
Mercedes-Benz E430 V8-4.3L - Warranty-Customer states that brakes make noise since brake job performed. - San Francisco, California

Bryan

5 years of experience
64 reviews
Bryan
5 years of experience
Mercedes-Benz E430 V8-4.3L - Shock Absorber Replacement (Rear) - Torrance, California
Excellent service!

Jared

16 years of experience
44 reviews
Jared
16 years of experience
Mercedes-Benz E430 V8-4.3L - Serpentine/Drive Belt - Portland, Oregon
Jared was really personable and informative! He was running ahead of schedule so he contacted me to see if I would like him to come early. He not only took care of the known issue but was also thorough to find a secondary problem that I was unaware of. He made extra time for me to take care of both issues immediately! Great service and very competitive pricing will bring my business back whenever I should have need. Thanks!!!

Jeff

33 years of experience
441 reviews
Jeff
33 years of experience
Mercedes-Benz E430 V8-4.3L - Brake Light Switch - Roseville, California
He is very professional and knows all about auto repair.

Excellent Rating

(27)

Rating Summary
25
2
0
0
0
25
2
0
0
0
Number of Mercedes-Benz E430 services completed
297+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
1100+
experts on our platform

Recent articles & questions

How to Buy a Good Quality Truck Tool Box
If If you have a pickup truck, the bed offers the means to carry a wide range of cargo. However, you can also turn it into a portable tool shed with the right truck tool box. There are quite a...
Symptoms of Bad or Failing Stabilizer Bar Bushings
Common signs include sluggish response in vehicle handling and rattling or squeaking noises from underneath the car.
Top Automotive News & Stories: August 20-26
This week's top auto news: 11 speed transmission, Pebble Beach Best in Show, Lamborghini Centenario Roadster, levels of autonomous driving, and more.

Gas mixed in engine oil

With the gas getting into the oil, this vehicle needs repair before it is driven further, engine damage be a result if one continues to drive. The answer to this question could differ depending on how the gas was added...

Knock sound while braking

Hello. A knocking sound when braking is most likely from the brake pads moving inside the caliper bracket and the rotors having a warped surface (https://www.yourmechanic.com/article/why-do-brake-rotors-warp) causing the pad movement. The pads may be aftermarket and not fit tight enough...

Cold engine misfire and hesitation - 1997 Dodge Dakota

Hi. I believe the ambient air temperature sensor, which measures the intake air temperature for engine management, has failed. It is reporting a far higher temperature than the engine is getting, as you have noted. Engine management is creating a...

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