BMW 750iL Fuel Injector Replacement Costs

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Fuel Injector Replacement Service

How much does a Fuel Injector Replacement cost?

On average, the cost for a BMW 750iL Fuel Injector Replacement is $730 with $576 for parts and $154 for labor. Prices may vary depending on your location.

Car	Service	Estimate	Shop/Dealer Price
1997 BMW 750iLV12-5.4L	Service typeFuel Injector Replacement	Estimate$2388.80	Shop/Dealer Price$2882.16 - $4316.88
1995 BMW 750iLV12-5.4L	Service typeFuel Injector Replacement	Estimate$1325.47	Shop/Dealer Price$1620.22 - $2496.53
1998 BMW 750iLV12-5.4L	Service typeFuel Injector Replacement	Estimate$4963.53	Shop/Dealer Price$6098.03 - $9478.11
2001 BMW 750iLV12-5.4L	Service typeFuel Injector Replacement	Estimate$4959.73	Shop/Dealer Price$6093.27 - $9470.49
1990 BMW 750iLV12-5.0L	Service typeFuel Injector Replacement	Estimate$1325.47	Shop/Dealer Price$1623.10 - $2501.57
1994 BMW 750iLV12-5.0L	Service typeFuel Injector Replacement	Estimate$1325.47	Shop/Dealer Price$1620.54 - $2497.08
1993 BMW 750iLV12-5.0L	Service typeFuel Injector Replacement	Estimate$1325.47	Shop/Dealer Price$1620.30 - $2496.66
1992 BMW 750iLV12-5.0L	Service typeFuel Injector Replacement	Estimate$1325.47	Shop/Dealer Price$1620.26 - $2496.61

Show example BMW 750iL 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.

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Craig

17 years of experience

67 reviews

Craig

17 years of experience

by Christopher

BMW 750iL V12-5.4L - Alternator - San Jose, California

I was,am completely satisfied from the first phone call to the end product(my car fixed right)!!

Adam

17 years of experience

64 reviews

Adam

17 years of experience

by Vince

BMW 750iL V12-5.0L - Serpentine/Drive Belt - Plano, Texas

I highly recommend Adam to anyone needing work to their car or truck. I own 2 old BMW 750iL 12 cylinder sedans. I'm talking 25 and 28 years old. They both have been in storage for about 6 years. One of them had a broken fan belt which I called Mobile Mechanic to send some one to replace it. The person they sent was Adam. Adam was on time for our appointment. He called the day before to introduce himself and disgusted with me the work to be done. Upon his arrival the day of our appointment, he was very polite when he introduced himself to me. He then went to examine my car and what needed to be done in my presents. After his examination he informed me that my water pump may had seized up and it was what was causing the belt to break. He suggested there also may be other things wrong such as the fan clutch that is attached to the water pump may also be froze up. He suggested that I not put the belt on but take it to a garage for further examination. We agree to this and he left without charging me anything. What an honest guy. I did take his advise and the next day had the car at the garage and they found that Adam was right. Both fan clutch and water pump froze up and that is what caused the belt to break. Adam not only saved me the cost of replacing another fan belt which would have broken if he replaced it but also the possibility of getting stuck on the road when the new belt would have broken because of the other 2 problems. Adam was honest enough to inform me of the possible additional problems even at the cost of him not getting the original job he was sent to do. When I get the other car out of storage it is my intent to call Adam to check it out and let me know what needs to be done.

Jose

16 years of experience

249 reviews

Jose

16 years of experience

by Kourney

BMW 750iL V12-5.4L - Coolant is leaking - Clearwater, Florida

He did a great job

Michael

41 years of experience

131 reviews

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Michael

41 years of experience

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by Shannon

BMW 750iL V12-5.4L - Clear fluid is leaking - Columbus, Ohio

My experience was excellent very knowledgeable and a pleasant guy got straight to the point let me know what I needed to worry about first-hand and what I needed to worry about later I would recommend him to my friends five stars all the way

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