[SoupAnxiety]

Is it possible to replace the injector tip o-rings by hand? Removing the existing rings doesn't seem difficult but the special tool to put new ones on looks quite involved. Thanks.

[E92 420]

Not possible mate. I tried all sorts trying to get them on by hand it's not possible to get them on properly. I was forced to buy the special swaging tool. It's actually very simple to use.

Use this link to have a look it comes with clear instructions.

http://mrinjectoruk.co.uk/Bosch-Mare...-P5411547.aspx

[AndrewA]

This is definitely possible. Use a blade and cut/slice the existing o-ring seal off.

Installing the o-ring by hand is possible also. Just slide the o ring over the injector tip and push 2 sides down at a time. Once on, pinch and squeeze the o ring on all sides for a couple minutes.

Not the correct way to do it but it works.

[SoupAnxiety]

I've replaced the decoupling elements but I've just reused the teflon rings. When I replace the final 3x injectors I'll revisit the first bank and do a proper job. Thanks for the tips, since I want to do it right I'll pickup the Mr Injector tool.

[Dann]

To compress them equally you could always use one of the caps that come in new injectors as they are designed to keep the seals compressed