Frequently Asked Questions About Injectors

Why should I remove injectors from the vehicle to clean them when I can do it without removal?

The process of visual inspection, ultrasonic cleaning, and testing for spray patterns and volume is the only accurate, reliable and guaranteed way to insure that a fuel injector is working properly. Our system is 100% verifiable. With our manufacturer approved, computer controlled cleaning and testing equipment, we can restore dirty, clogged or leaking fuel injectors to operate at the same level as a new fuel injectors.

What causes a fuel injector to stick open?

Main reason a fuel injector will stick wide open is because it has dirt or debris in it. The only way to get the fuel injector to work, is by having it cleaned and retested.

What causes a fuel injector to leak?

The main reason is that when you install them the surface and area needs to be clean with no dirt or debris around it. When installing fuel injectors make sure all of your O-rings are soft and have Marvelous Mystery oil on them or something conferrable.

What causes a fuel injector to throw a code?

Typically the reason why is that the fuel injector is not functioning they way it was designed. It could be putting to much fuel in the engine or not enough. The fix is to get the fuel injector rebuilt.

I am wanting to add more horse power to my vehicle - can a new set of injectors help?

Yes, only you first need check into getting your ECU tuned. Most engine computers need to be reprogrammed to accommoate a set of high performance fuel injectors. Then, once you know what's possible with your vehicle computer, you can decide on which fuel injectors you can add to increase power.

I've changed my fuel injectors and it is still running rough or throwing a computer code?

There are several things it could be first check your coils my using a ohm meter with the engine off If that is fine then remove your fuel injector harness clip with the key off and check the ohm's back to the ECU if the Ohm's are much higher then the Ohm's on the Fuel injectors then you have a burnt coil in your ECU.


Frequently Asked Questions About TLF Performance Parts

What happens if you send me the wrong part?

We're sorry. Give us a call at 618-715-8200, so we can get it corrected.

What happens if I order the wrong part?

You will need to follow our standard returns procedure.

How long does it take for a part to arrive at my door?

Whenever we can, we process orders as soon as we get them and initiate same-day shipping. However, special orders and out-of-stock items can take longer. If you choose ground shipping, that usually takes 3-4 days. We also offer 2-day shipping and next-day shipping (business day).

What happens if I need to return or exchange a part?

You may return damaged or defective merchandise within 30 days of the original purchase date for a full refund, minus shipping charges. Please follow the return instructions [Developers - need link] for a return or an exchange.

What if the part is broken or damaged during shipping?

Please contact us right away. You may return damaged merchandise within 30 days of the original purchase date for a full refund, minus shipping charges. We will also be glad to exchange the damaged merchandise for anything on our site of equal or lesser value.

Do you ship outside the US?

Yes. TLF Performance Parts does ship internationally for a $66.90 fee, applicable to all destination countries. TLF Performance is not responsible for any additional duties, taxes, and/or fees.

Do you offer express/expedited shipping?

TLF PerformanceParts.com can expedite your order with 2-day or Next-day shipping. Extra charges will apply.

What shipping methods do you offer?

Free ground shipping in the contiguous 48 states. We also have 2-day or Next-day shipping options.

Can I track my package?

Yes. Look in your email inbox for a purchase confirmation email and shipping update emails that will include a tracking number.

What payment methods do you accept?

Visa, MasterCard, American Express, Discover, and PayPal.

How do you protect my credit card information?

Our website checkout is SSL secured, which means your personal and credit card information is encrypted to keep it safe.

What do I do if I need to cancel my order?

Hurry! Call us at 618-715-8200 immediately. We usually process orders the same business day and cannot cancel if the order has shipped.

Do I need to have an account to order a part?

No, you don't need an account but setting up makes it convenient to see your order and where it is in the delivery process.

Do you offer a warranty?

Yes. Most of our fuel injectors carry a 1-year and/or 12,000-mile warranty. Learn more here.

How do replacement parts affect my vehicle’s warranty?

The short answer is they don't. Manufacturers are not allowed to deny a warranty repair unless they can prove that the replacement part directly caused the problem.

How can I be sure the part I need will fit my vehicle?

You will find fitments listed on each fuel injector product page. If you have more questions or need additional information, just email us at support@tlfperformanceparts.com.

What if I am looking for a fuel injector you don't sell?

At TLF Performance Parts, we do build custom injectors. If you are looking for fuel injectors for a vehicle, UTV, boat or mototrcycle and can't find it on our website, please contact us about your fuel injector requirements. We may able to assist you.

What if I want to talk to a real person about my order?

Just give us a call during regular business hours. We're here Mon - Fri, 9AM - 5PM, EST and Saturdays 8AM-5PM, EST. 618-715-8200

What are your Customer Service hours?

We're here Mon - Fri, 9AM - 5PM, EST and Saturdays 8AM-5PM, EST.

Do you ever offer coupons or discounts?

Occasionally. Sign up for our TLFPerformanceParts.com newsletter to be the first to learn about any promotions or sales.

Do you charge sales tax?

Yes, TLF Performance Parts will collect slaes tax on all US purchases.