Frequently Asked Questions
What is GDI?
Engine manufacturers are switching to Direct Injection Fuel Injectors to meet emissions standards, better performance and greater fuel economy. GDI or Gasoline Direct Injection is a process where the very fine mist of fuel is injected, at fuel pressures that vary between 80–3000 psi, directly in to the combustion chamber. To achieve these pressures, the gasoline is pressurized by a high pressure fuel pump that is mechanically driven and electronically controlled. Because there is no cleaning agent, such as gasoline, present to clean the valves from any debris, carbon and dirt builds up behind the intake valves and ports. After 45000 miles, engines start losing performance, and It’s costly to fix because you’ll need to remove the cylinder head to remove the dirt buildup from the intake valves and ports.
How can SPI help?
Our GDI injector cleaning and testing service can help save you money. We can service fuel injectors for anyone, anywhere in the world. Please feel free to Contact Us regarding questions you may have. The ASNU Injector Diagnostic System allows us to compare, side by side, fuel injector flow rates and spray patterns. We also service automotive, motorcycle, ATV, jet ski, marine, and outboard fuel injectors. Our cost-effective ultrasonic cleaning and electronic flow testing procedures will restore most fuel injectors to a reliable factory new condition, therefore eliminating the purchase of new and expensive OEM or aftermarket fuel injectors. When all cylinders are operating evenly, you can expect emissions, drive-ability, peak performance and fuel economy to improve.
Does SPI “rebuild” fuel injectors?
Nobody actually rebuilds gasoline injectors, since they are a sealed unit and can’t be totally disassembled. What we do is inspect, test, ultrasonically clean and replace any serviceable parts, (such as filters, o-rings, & pintle caps). Some companies call this rebuilding, or even remanufacturing, and charge over 5 times our price. We replace all the parts that can be replaced. The truth is, you are getting the same thing.
Why should I have my injectors serviced?
If you have your injectors out for any reason, you should have them professionally serviced. The tips clog from solid deposits in the fuel and the filters become restrictive. On car cleaning won’t unclog a stuffy filter. When your injector is performing like new, it improves tail pipe emissions, fuel economy, power and cold start dependability.
I’m replacing or rebuilding my engine, should I buy new injectors?
You should only buy new injectors if your old ones have case leaks or electrical problems. You should have your injectors serviced to make sure you don’t lean out a cylinder on your new engine and ruin it. Most warranty’s won’t cover an engine failure caused by a lean condition. We provide you with a computer report to prove to your engine company your injector’s performance.
Can you return the old used parts that have been replaced?
Yes, we can, and do return them. It is standard practice to return these parts. Please make sure you include the original parts that came from the injectors being serviced. Sometimes these parts tell us a story about the injectors being serviced. If you were experiencing a leak and remove all o-rings before sending them in for service, we would not be able to tell you where the leak was coming from.
What services does Southern Performance Injectors offer?
Southern Performance Injectors specializes in ultrasonic cleaning and flow testing of gasoline fuel injectors. They service injectors for various applications, including automotive, marine, motorcycles, and ATVs, ensuring optimal performance and efficiency.
How often should fuel injectors be cleaned?
It’s recommended to have fuel injectors cleaned every 30,000 miles or as specified by your vehicle manufacturer. Regular maintenance helps prevent performance issues, improves fuel efficiency, and extends the life of your engine.
Can Southern Performance Injectors handle high-performance or modified injectors?
Yes, Southern Performance Injectors specializes in servicing high-performance and modified injectors. Whether for racing applications or custom builds, they ensure injectors perform at their peak with precise cleaning and flow testing.
What are the signs that my fuel injectors need cleaning?
Common signs include rough idling, decreased fuel efficiency, difficulty starting, or reduced engine performance. If you experience any of these symptoms, it’s time to have your injectors inspected and cleaned.
How do I know if my injectors are faulty or just dirty?
A thorough flow test can differentiate between faulty injectors and those that simply need cleaning. Southern Performance Injectors provides a detailed report after testing to identify the root cause.
Can fuel additives replace professional injector cleaning?
While fuel additives can help prevent buildup, they are not a substitute for professional ultrasonic cleaning and flow testing. Regular servicing ensures a deep clean and identifies potential issues early.
What happens if my injectors can’t be repaired?
If injectors are beyond repair, Southern Performance Injectors can provide replacement options, including refurbished injectors or guidance on sourcing high-quality replacements.
How should I prepare my fuel injectors for shipping?
Ensure injectors are completely dry and individually wrapped in paper towels or cloth to prevent damage during transit. Proper packaging safeguards the injectors and facilitates efficient servicing upon arrival.