Frequently Asked Questions

Service prices and options are posted on the site. Please check the “Injector Cleaning Category” in our shop.

We are currently running same to next day turn around for top-feed port injection and Air Injectors. For side-feed, High Pressure GDI and Piezoelectric please see each item page for current turnaround times.

No. If there was an update, your order would have been updated. Have you ever driven in the car with a someone who asks “are we there yet” every few minutes? If you have, you will understand why we packed up your unfinished injectors, sent them back to you and refunded your order.

Each item has an example of the type of injector the component fits under the “Detailed Images” tab in the product description. These are not the only injectors they fit, but is a great starting point. You can also check the Vehicle Search tool on most pages of the site. We also have a detailed application guide accessible from any page on the site located in the upper right corner.

Not every single car is going to have what we call a “kit”. We have all the parts to make a “kit”, but you will need to add the items to your cart individually. For help with this, we have a detailed application guide accessible from any page on the site located in the menu. We only list the most popular “kits” that people tend to order. Just because you do not see it in a “kit” format, does not mean you can not get it from us.

It is recommended that you purchase extra parts at the time of purchase. It is very easy to tear an o-ring while installing, misplace a filter, crack a pintle cap ect when trying to install new parts. It is much cheaper to buy them at the time of purchase than it is to need to pay for shipping a single o-ring later due to an install error. These are all “replaceable” parts and WILL break, Tear, get lost, or crack. The shipping of a replacement part still costs us money to ship back to you, so unfortunately we must pass that cost back onto you if these extra components are not purchased at the original time of purchase, and you need an additional replacement. These mishaps at install time also cause delays to you, the installer because you don’t have a spare $.50 part available to use.  

It is recommended that you purchase BOTH of these if you are not sure. This is why we put that “warning” on the site to alert you of this. There is no way to tell on many injectors which one you will need by simply providing us with a make and model. At the time of install you will be happy you spent the additional few cents to make things go smoother rather than having to re-order and pay shipping twice and wait for delivery because you don’t have the correct part available to use the first time.  

Unfortunately…. No. It may be something we add in the future, but not at this time

No. Components will be replaced if you select to have them Cleaned and Flow Tested, or Dynamic Cleaning. There is no need to purchase the components unless you have a side feed injector. Side feed filters are not replaced with service.

No. Included in the price of service, Side Feed injectors will have their filters ultrasonically cleaned, not replaced. Should you want them replaced, you will need to purchase them through the site.

If you are unsure of your ability to swap out an o-ring or change a pintle cap, then you more than likely should not be attempting this.

No. We do however have a removal tool that is available for purchase. Without the tool, you can use a simple machine screw clamped by a vice and gently turn the injector on the screw and pull away from the screw when you feel it catch. The filters are not that difficult to remove. Installing the new filter is as easy as dropping the filter in place and gently tapping on it with the flip side of the removal tool until it sits flush. That’s it. Done.

No. This is as straight forward as replacing the filter. If the Caps have not cracked off your injector and you need to remove them, the best thing to do is to use a utility knife to make a single cut down one side of the cap to be able to easily pry the cap off.
Installing the new cap is as easy as sliding the new cap on. Common sense will tell you that these caps need to be tight, so they may feel like they are the wrong size. If that is the case, heating the cap prior to applying pressure to slide them on will ensure the plastic is not as brittle and will not crack your new cap. Again, it is always recommended to buy more than the number of injectors you are servicing to allow for any install errors.
*Be VERY careful when installing new caps on Pintle Style injector. If you are using a hard surface to press the caps on, be sure there is enough clearance under your hard surface to not damage the injectors pintle. At home, you can use a piece of wood with a hole drilled in it as a “relief” for the actual pintle when applying pressure to the injector to fit it with a new cap. 

No. It is all very self-explanatory. I have never seen instructions for underwear, but I would imagine they would be very similar to the instructions for o-rings. They would probably read something similar to this:

Step 1: Remove old Crusty (replace Crusty with your choice of many words) o-rings. (You could also replace o-rings with Underwear)
Step 2: Clean area crusty o-rings came from with a clean cloth.
Step 3: Replace with the newly purchased o-rings.
Step 4: Dispose of crusty o-rings.

 Yes, but that depends on the service you have selected. Components will NOT be replaced if you select to have them flow tested only. If select Clean and Flow or the Dynamic service, YES they WILL be replaced. Side Feed filters are the exception and will only be cleaned, not replaced unless you purchase the filters in addition to the service.

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.

Injectors can be sent in still in the fuel rail but additional charges will apply for Injector-Rehab to remove the injectors. The additional cost is $6 per injector. Injector-Rehab will not be held responsible for ANY damage caused from the removal process. We recommend removing the injectors from the rail yourself.

You will not be charged if we can not perform the service. If the injector is DOA (Dead on arrival) we will not perform the service. However, there is a minimum bench charge of $5 per injector for tests performed to declare the injector “DOA”. The difference will be credited back to you.

In a lot of cases, we are able to source a replacement. The replacement injectors are from various sources. Most are serviced injectors out of other cars. The price and availability vary depending on many things such as: Time (we may be able to get them, just no cores available at that time), Injector part number / how common it is ect. In all cases, there is a core charge in addition to the price of the injector. Unfortunately, if you find yourself in this scenario, you do not have a “usable” core and the core charge will apply and is not refundable.

We recommend that you reinstall them within at least 30 days of service date. We DO make it standard practice to lubricate the injector’s internals after service, but depending on the individual injector some problems can occur if left sitting to long. Some of these problems can include, but are not limited to, poor spray pattern, becoming stuck open or closed or leaking under pressure. If this is the case and your service date is within 45 days of the date you contact us about the problem, you can send the injectors back to us to correct the issue at no additional service cost. You will be responsible for inbound and outbound shipping. Please note that some injectors may show these symptoms sooner than 30 days by design. 30 Days is the average for top feed. Side-Feed and TBI injectors should be installed and used within 15 days as these injectors tend to show these symptoms much sooner!

Yes, we offer an insurance program to reduce the overall cost for those who use this service on a regular basis. Please contact us with any questions about this.