Mitsubishi Diamante 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 Mitsubishi Diamante Fuel Injector Replacement is $1297 with $1135 for parts and $161 for labor. Prices may vary depending on your location.

Car	Service	Estimate	Shop/Dealer Price
1995 Mitsubishi DiamanteV6-3.0L	Service typeFuel Injector Replacement	Estimate$4118.80	Shop/Dealer Price$5114.76 - $8062.13
2001 Mitsubishi DiamanteV6-3.5L	Service typeFuel Injector Replacement	Estimate$2955.38	Shop/Dealer Price$3669.52 - $5771.34
1999 Mitsubishi DiamanteV6-3.5L	Service typeFuel Injector Replacement	Estimate$2964.10	Shop/Dealer Price$3680.41 - $5788.78
2000 Mitsubishi DiamanteV6-3.5L	Service typeFuel Injector Replacement	Estimate$2964.10	Shop/Dealer Price$3680.37 - $5788.71
1992 Mitsubishi DiamanteV6-3.0L	Service typeFuel Injector Replacement	Estimate$2432.30	Shop/Dealer Price$3017.07 - $4732.97
1993 Mitsubishi DiamanteV6-3.0L	Service typeFuel Injector Replacement	Estimate$2432.30	Shop/Dealer Price$3017.04 - $4732.93
1997 Mitsubishi DiamanteV6-3.5L	Service typeFuel Injector Replacement	Estimate$2973.10	Shop/Dealer Price$3689.17 - $5797.35
2002 Mitsubishi DiamanteV6-3.5L	Service typeFuel Injector Replacement	Estimate$2964.38	Shop/Dealer Price$3678.94 - $5781.08

Show example Mitsubishi Diamante 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 Mitsubishi mechanics

Real customer reviews from Mitsubishi owners like you.

Excellent Rating

(34)

Rating Summary

30

3

0

0

1

30

3

0

0

1

SEE REVIEWS NEAR ME

Nicholas

11 years of experience

586 reviews

Request Nicholas

Nicholas

11 years of experience

Request Nicholas

by Michael

Mitsubishi Diamante V6-3.5L - Car is not starting - Garner, North Carolina

Nick arrived and introduced himself and asked a few background questions about the vehicle and the problem. He tested several electrical components and I left him for just a few minutes. Within that short period of time, he had successfully determined the no crank, no start issue and resolved it for me. Fortunately for me, no additional parts were needed. Thanks for a great job!

Curtis

29 years of experience

163 reviews

Curtis

29 years of experience

by Odyssey

Mitsubishi Diamante V6-3.5L - Car is not starting - Augusta, Georgia

He came did his job

Keith

26 years of experience

231 reviews

Keith

26 years of experience

by Jennifer

Mitsubishi Diamante V6-3.5L - Idle Control Valve - Fort Worth, Texas

Keith was on time and did the work in a timely manner. Hope the least expensive fix keeps her running for a few more months!!!

Matt

17 years of experience

39 reviews

Matt

17 years of experience

by Michael

Mitsubishi Diamante V6-3.5L - Car is not starting - Garner, North Carolina

Great job! . He was thorough in his diagnosis of the my issue. Found the problem and I scheduled him to return and repair the problem.

Excellent Rating

(34)

Rating Summary

30

3

0

0

1

30

3

0

0

1

SEE REVIEWS NEAR ME

Recent articles & questions

How to Get a Replacement Car Key

Lost car keys can be extremely frustrating. Try to find missing keys first, then call a local locksmith to see if they can make a replacement car key.

How to Renew Your Car Registration in Nebraska

The The roads in Nebraska are very well-maintained and easy to drive on. In order for the roads to stay in good shape, a number of taxes will have to be collected. When moving to Nebraska, you will have to...

How to Replace a Manifold Absolute Pressure (MAP) Sensor

Signs of a faulty manifold absolute pressure sensor include excessive fuel use and lack of power with your car. You may also fail an emissions test.

Steering wheel difficult to turn

When the steering wheel is difficult to turn the vehicle is unsafe to drive until repairs have been performed. These symptoms usually mean the power steering system has failed. The most common cause of the power steering system failing is...

I have a 2005 Nissan Altima. There is a small jerk from 1st to 2nd gear only;the other shifts are fine. What could be the problem?

What you are describing is often a sign of low transmission fluid (https://www.yourmechanic.com/services/transmission-fluid-service) or a faulty transmission control solenoid. As you know, automatic transmissions use pressurized hydraulic fluid to change gears. Every time a gear change is required, the car's...

Removing the transmission by myself, I had a problem with removing the bolts from the flex plate.

Flex plates cannot be straightened or repaired in the field save for the possibility in some applications of replacing the starter ring gear if the teeth on the gear are damaged. If the flex plate is bent, a new one...

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