Fuel Injector Ultrasonic Cleaning & Flow Testing
Mooresville North Carolina


What is the cost of Fuel Injector cleaning?

Clean and Flow Test Top Feed Injector ($30 per injector)
Clean and Flow Test Side Feed Injector ($30 per injector)
Clean and Flow Test GDI Injector ($30 per injector)
Mercury Optimax Air Injector ($35 per injector)
Hose End Injector ($35 per injector)
Piezo Injector – Cleaning & Seal install – No flow test ($25 per injector)
Rush Same Day Service ($50.00 per set)
Flow Test Only ($15.00 per injector)

What is the return time?

Most Fuel Injectors are serviced in two – three days. If rush service is needed, please contact Race City Injector for expedited service options.

What are the symptoms of a dirty or clogged fuel injector?

Rough Starting, Misfiring, Hesitation/Stumbling on Acceleration, Shaking at Idle, Loss of Power, Engine Knock, Decreased Fuel Economy and Poor Performance are all symptoms of a poor performing injector.

My repair technician or dealer said I need a new fuel injector(s). Is this true?

Only 2% of all fuel injectors actually fail and need replacement.  Most fuel injectors can be cleaned and have the filter baskets and O-rings replaced to restore them to factory condition at a fraction of the cost of replacement.  Race City Injector will not charge for service if the injector truly requires replacement.

Why shouldn’t I use a fuel injector additive or on-car cleaning offered at my local shop or dealer?

Although these detergents may provide some level of cleaning, there isn’t any equipment currently available that will enable the technician to accurately analyze the condition of the injectors while they are on the car to ensure thorough cleaning and proper flow and fuel atomization.

What is Flow Matching?

Flow Matching is a process that groups a set of fuel injectors that have similar flow rates. Race City Injector can take a large sample group of injectors and “Flow Match” a group of the injectors that will ultimately have a flow rate variance of less than 1%.

Do you service diesel Fuel Injectors?

At this time Race City Injector doesn’t service diesel fuel injectors. We are currently working to offer this service in early 2014.

Why should I have my Fuel Injectors Serviced?

The fuel injector tips clog from solid deposits in the fuel and the filters/baskets collect debris which restricts fuel flow. On car cleaning or fuel additives won’t unclog a filter full of debris. When your injector is performing at optimum levels, it improves emissions, fuel economy, power and cold start dependability.

What type of fuel injectors do you service?

Race City Injector services the following fuel injectors:

Top Feed

Side Feed

GDI Injectors

Natural Gas Injectors

ATV Injectors

Marine Injectors

Snowmobile Injectors

How does a Fuel Injector Work?

Fuel from the fuel rail, under pressure, is sprayed in a very fine miss from the tip of the injector. To achieve this, a current must flow through the fuel injector electrical field coils. Contrary to popular belief, this is NOT done by sending power to the injector. Fuel injectors are normally fed power whenever the ignition key is on, but the circuit is not completed and therefore the injector is still close. The computer controls the ground side of the circuit. When the computer provides the injector with a ground, the circuit is completed and current is allowed to flow through the injector. This energizes an electromagnetic coil inside the injector, which pulls a sealing mechanism such as a pintle, ball, or disc away from its seat. This makes it possible for fuel to flow through the injector and into the engine. When the computer removes the electrical ground to the injector, the electromagnetic coil becomes demagnetized and a spring forces the pintle, ball, or disc shut to cut off fuel flow. Even at an engine speed of just 1000 RPM, this is done hundreds of times per minute.

Do fuel injectors have filters?

Yes, all fuel injectors have filters that will be replaced during service.

Do injectors have any kind of tolerances?

Yes, the injectors have a tolerance of 1 Micron, the finest tolerance of any mechanical component on the engine. Fuel manufactures claim their latest generation of fuel additives are designed to prolong the life of your engine by coating the metallic parts of the engine and reduce wear. These additives also coat the internal components of the fuel injector, restricting the fuel flow.

Natural Gas
Motorcycles / ATV
Performance Testing