Welcome to Mr.Injector fuel injector cleaning!
We service gasoline fuel injectors using the ASNU ultrasonic flow bench and service machine. Why buy reconditioned fuel injectors when we can make yours like new again.
Any Gasoline Fuel Injector serviced for $16.00ea Fuel injectors rarely die. They just get dirty. Fuel injector cleaning restores them back into like new condition and performance. Your injectors are cleaned and flow tested on the ASNU flow bench and ultrasonic cleaning machine. After cleaning new injector parts including filters, o-rings, spacers and pintle caps are installed. They are returned with a before and after flow report. |
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How to use our service - Drop off or mail in
Local If you are in the Coeur d'Alene area you can drop off your injectors at 6280 N. Government Way Unit 4 between 8:00am and 4:00pm. We don't need the fuel rail so just bring in the injectors. You can bring them in after hours and use our after hours service drop off. There are instructions on the door. Next day service on carry in fuel injectors.
Out of Town If you are out of the area fill out this form and follow the directions for shipping. Turn around time is one to two working days. You have your choice of USPS priority shipping for $5.50 or if you are in a hurry USPS express is $20.00. All international orders are returned USPS Express international for $38.00
What is ASNU Injector Service
ASNU injector repair service is a fuel injector cleaning process. It begins with injector flow testing and ultrasonic cleaning. Ultrasonic cleaning brings the injectors performance back to like new or good as new condition. That's where the ASNU name came from. Good as new. Servicing your injectors is preferable to reconditioned fuel injectors. Your high quality original equipment injectors just need a good ultrasonic cleaning and quality injector flow testing to ensure performance. New injector parts including pintle cap, spacers, filters and orings are installed to bring them back like new. Good ASNU and better than reconditioned fuel injectors. Try Mr Injector service for ASNU Injector Service, Injector flow testing and injector repair. .
Out of Town If you are out of the area fill out this form and follow the directions for shipping. Turn around time is one to two working days. You have your choice of USPS priority shipping for $5.50 or if you are in a hurry USPS express is $20.00. All international orders are returned USPS Express international for $38.00
What is ASNU Injector Service
ASNU injector repair service is a fuel injector cleaning process. It begins with injector flow testing and ultrasonic cleaning. Ultrasonic cleaning brings the injectors performance back to like new or good as new condition. That's where the ASNU name came from. Good as new. Servicing your injectors is preferable to reconditioned fuel injectors. Your high quality original equipment injectors just need a good ultrasonic cleaning and quality injector flow testing to ensure performance. New injector parts including pintle cap, spacers, filters and orings are installed to bring them back like new. Good ASNU and better than reconditioned fuel injectors. Try Mr Injector service for ASNU Injector Service, Injector flow testing and injector repair. .
News
ASNU
Injector Service - One of the components that is
ignored is the filter. It protects the injector from
contamination. With time age and mileage they become fouled and require
replacement. We replace them during our fuel injector rebuild with a new replacement. A good fuel injector rebuild must include a new filter. This
is something on the car cleaning does not include. We
also replace the pintle cap on those applications with a replaceable
one. The pintle cap will become brittle with age and can cause a intake
leak if it fails.
No Diesel - We get lots of calls for diesel service but we stick to gasoline injectors only. We will service any gasoline injector with the exception of the CIS Direct used on some early Porsche, direct electronic and diesel. Check our blog for news updates
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Why Not Just Clean Injectors On The Car?
On the car fuel injection cleaning might be a good idea for maintenance but it doesn't get the injectors perfectly clean like ultrasonic cleaning does. Our experience in the shop with the flow bench has shown some injectors to be stubbornly dirty and difficult to clean. Even if you get them clean enough to solve a misfire are they up to 100% for power delivery?
Without a flow bench it's just a guess. Here is a illustration from the lab at ASNU showing a chemically cleaned unit and one cleaned ultrasonically with the ASNU flow bench and ultrasonic cleaning machine.
Without a flow bench it's just a guess. Here is a illustration from the lab at ASNU showing a chemically cleaned unit and one cleaned ultrasonically with the ASNU flow bench and ultrasonic cleaning machine.
The one shown below right has been cleaned on the ASNU flow bench using ultrasonic high frequency sound waves. It's perfectly clean and the flow rate, spray patten and penetration have been restored like new.
 This pintle had been cleaned on the car. It still has hard deposits interrupting flow. |
 Ultrasonic sound waves remove all the deposits restoring function to like new. |
The tolerances in the injectors are less than one micron. Any dirt effects this tolerance and therefore the flow volume. The volume effects power, but what about the spray pattern quality and penetration. Correct spray pattern formation is critical to torque rise and complete combustion. A dirty tip will not support the correct droplet size of fuel. If the droplet size is too small then the then fuel doesn't make it to the combustion chamber to be burned.
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On the car cleaning doesn't address the filters in the fuel injectors. Each injector has a filter that gets restrictive with mileage. On car cleaning can't clean it. Replacement is the only way to bring the flow back to specification. |
 Dirty fuel injection filters restrict the injector flow rate causing low power. |
There are lots of alternatives to cleaning gasoline fuel injectors such as additives, on car cleaning or even removing the injectors for a chemical soak but none of these methods guarantee injector performance because there is no flow test done. Let us service your injectors for you and have confidence that they perform like new. Click here to see our service procedure.
The Question about Rebuilt Fuel Injectors and Fuel Injector Repair
There are some vendors out there that offer rebuilt fuel injectors but
our experience testing them has shown very poor balance from one unit to
another. If you have a core that fails the electrical test we recommend
you buy a new unit. Most of the new ones we test provide good flow
balance. We don't offer rebuilt fuel injectors even though most people consider what we do to be a fuel injector rebuild. Our process is one of
cleaning your good cores and installing new service parts to bring the
injector back into like new performance.
