Frequently Asked Questions - Overhaul Kits / Injector Sales

Q- I'm not in the UK, will you send purchased injectors to me?

A- We no longer send injectors internationally. We send our overhaul kits worldwide, however.

 

Q- Do I need any special tools to remove the old filters and pintle caps on my injectors and install the new ones?

A- No special tools are required to remove/install these parts; we do mention a couple of general tools in our instruction sheets (provided with hose kit orders), but these are part of most people's toolboxes.

 

Q- Do I need any special tools to install the Teflon bushes onto the injector?

A- Yes, a bush installation tool will be required to swage the bushes onto the pintle shaft. We can do this for you, or your local Asnu service facility.

 

Q- Do I have to change my Teflon bushes before I reinstall my high pressure / Piezo injectors back into the engine?

A- Yes! Every time you remove injectors that have bushes on the pintle shaft, you must replace these bushes before reinstalling. The bushes are there to stop gases from escaping up the injector body, causing damage to the injector. They only work once because they expand when the engine gets hot, creating this seal. Once this is broken, you'll need new bushes to create a new seal.

 

Q- How do I remove my old ferrules?

A- Please follow the instructions we provide with hose kit orders for our advice on the removal and installation of ferrules to minimise damage to your inlet ports.

 

Q- Do you recommend using lubricants to help install the seals?

A- The only lubricant we recommend is a tiny smear of clean engine oil, nothing else, and nothing that contains silicone. Grease/silicone would be scraped up into the fuel rail on insertion, this would then react with the fuel and turn to jelly, blocking the injector pintle area.

Excellent
User Image
D W
February 11, 2025
Great communication, helpful when encountering issues and process is both easy and efficient. Wish I had used the service before I found out the painful way my injectors were duff! Back on track now, thanks!
User Image
stephen brough
February 2, 2025
Excellent hassle free service. Serviced 6 forty year old Bosch petrol injectors and all working well.
User Image
Christopher Foxley
January 29, 2025
Only place to go to for servicing injectors. Fantastic service outstanding 👌👌👌
User Image
James France
January 26, 2025
Absolutely first class service, highly recommended, James kept me in the loop, injectors fitted and car seems so much smoother 👍
User Image
James Chisnall
January 24, 2025
I had a problem with the payment line when ordering online, a quick email to James and he sorted it straight out so if you have an issue please do not hesitate to contact him. Absolutley fantastic service with a great product, even including an instruction manual postage was speedy and on time. 10/10 and quite frankly I don't know why you'd buy from anyone else. Cheers James, thanks to you my V12 Jag with roar again.
User Image
philip boden
January 21, 2025
Very courteous and efficient service. Thank you, you will be my first call for injector service.
User Image
Steve Knight
December 17, 2024
Fantastic service, explained to me how to work out the correct seals for my bike injectors and they were delivered the next day
User Image
Anthony
December 7, 2024
Amazing service and communication. My injectors where fully serviced and returned within a week. What impressed me the most was not only where they cleaned and new o rings etc included they were also stripped and painted. They look and operate like brand new. In fact, probably better than new.
User Image
Aiden McHaffie
December 7, 2024
Truly excellent service. I booked my injectors in to be serviced and received an instant quote. They were done on the expected day and arrived with me the next day looking as new despite having done 134000 miles. A full report on their condition was given to me. I would recommend Mr Injector
User Image
Declan Bell
December 4, 2024
Great service with a reasonable price and my injectors look brand new!