Lexus GS300 Fuel Injector Replacement Costs

Estimate price near me

Service Location

Customer Ratings

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.

See availability

Customer Ratings

Fuel Injector Replacement Service

How much does a Fuel Injector Replacement cost?

On average, the cost for a Lexus GS300 Fuel Injector Replacement is $1878 with $1528 for parts and $350 for labor. Prices may vary depending on your location.

Car	Service	Estimate	Shop/Dealer Price
1993 Lexus GS300L6-3.0L	Service typeFuel Injector Replacement	Estimate$3598.20	Shop/Dealer Price$4384.18 - $6692.49
1999 Lexus GS300L6-3.0L	Service typeFuel Injector Replacement	Estimate$3571.35	Shop/Dealer Price$4347.67 - $6651.38
1997 Lexus GS300L6-3.0L	Service typeFuel Injector Replacement	Estimate$3775.25	Shop/Dealer Price$4602.70 - $7059.45
2005 Lexus GS300L6-3.0L	Service typeFuel Injector Replacement	Estimate$3571.35	Shop/Dealer Price$4347.82 - $6651.64
2000 Lexus GS300L6-3.0L	Service typeFuel Injector Replacement	Estimate$3571.35	Shop/Dealer Price$4356.84 - $6667.43
2004 Lexus GS300L6-3.0L	Service typeFuel Injector Replacement	Estimate$3571.35	Shop/Dealer Price$4348.68 - $6653.15
1994 Lexus GS300L6-3.0L	Service typeFuel Injector Replacement	Estimate$3566.67	Shop/Dealer Price$4342.07 - $6642.45
2001 Lexus GS300L6-3.0L	Service typeFuel Injector Replacement	Estimate$3571.35	Shop/Dealer Price$4347.82 - $6651.64

Show example Lexus GS300 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 Lexus mechanics

Real customer reviews from Lexus owners like you.

Excellent Rating

(232)

Rating Summary

215

11

3

0

3

215

11

3

0

3

SEE REVIEWS NEAR ME

Ben

42 years of experience

1589 reviews

Ben

42 years of experience

by Tish

Lexus GS300 L6-3.0L - Check Engine Light is on - Houston, Texas

Found real issue with my car! Thanks!

Mark

12 years of experience

349 reviews

Mark

12 years of experience

by Kathy

Lexus GS300 V6-3.0L - Oil Change - Fremont, California

Mark was great. He didn't try to oversell me. He was prompt, courteous, and gave me helpful information about my car in lay terms.

Gustavo

18 years of experience

575 reviews

Request Gustavo

Gustavo

18 years of experience

Request Gustavo

by David

Lexus GS300 L6-3.0L - Spark Plugs - San Antonio, Texas

Excellent repair, on time service.Explained every service that was needed.

Chris

23 years of experience

2372 reviews

Chris

23 years of experience

by Young

Lexus GS300 L6-3.0L - Check Oil Pan Gasket - Irvine, California

Chris was pleasant. He came earlier than I expected , which was good for me. After he finished the work he explained what he has done and what I would expect.

Excellent Rating

(232)

Rating Summary

215

11

3

0

3

215

11

3

0

3

SEE REVIEWS NEAR ME

Recent articles & questions

How Does the Fuel System Work in a Modern Car?

Cars Cars have evolved a staggering amount over the last decade, and the biggest issue that manufacturers addressed with those advancements involves the amount of fuel used by the engine. Consequently, the fuel systems found in modern cars can get...

B1921 OBD-II Trouble Code: Air Bag Diagnostic Monitor Ground Circuit Open

B1921 means there is an issue with the airbag system diagnostic module, likely because of faulty electrical components.

How to Replace a Lost or Stolen Car Title in Michigan

There There are plenty of important documents we are responsible for keeping safe, your car title is one of them. This piece of paper proves that you are the registered owner of your vehicle, which is vital if you plan...

I unhook the positive cable to the battery to stop the engine from running did it affect any of the electrical components or anyth

You may have caused electrical voltage spikes in the system. If you could not get the vehicle to go in park, then you may have a transmission or computer system failure and can be covered under one of the recalls...

Won't move sound like a cat in a blender

I don't know what a cat in a blender sounds like, but I think I may know what it is that you are hearing. It's possible that you have had a CV joint fail, in which case the transmission and...

Leak detection pump location?

Hi there. You are probably going to spend more time, effort and trouble trying to replace this component on your BMW than it would be worth - especially if you're planning on trading the vehicle in to a new purchase....

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 (844) 997-3624 · hi@yourmechanic.com