Injector/Fuel Rail O Ring Replacement - How Difficult?

[Roadkill]

For those of you that have done this, how difficult is it? I'm going to try this fix to see if it remedies my cold start issues. TIA.

[upallnight]

Cut the o-rings off the injectors instead of trying to save them. If you have the injectors out you should send them out to get rebuilt or rebuild them your self.

I rebuilt the injectors to my E34 when I had it. Replace the screen and pintle cap at the tip. If you have an old fuel pump you can run some injector cleaner through the injector. Just connect a 12 volt power source to the injector, run the fuel pump and pulse the injector.

[Roadkill]

Thanks Up. I'm going to have to leave the injectors alone for now. I'm just doing the o rings to see if it solves my starting problem.

[upallnight]

When you go to put the injectors back in use a little bit of oil on the o-rings they slide back onto the injectors really easy and they go back into the intake manifold really easy compare to being dry.

[Roadkill]

Good advice, thanks.

[tmv]

When I did the upgraded injectors in my Z32, I used petroleum jelly (vaseline), not oil to lube the o-rings and injectors.

[Isambard]

I've just finished cleaning my injectors and will be putting a dab of silicone spray on my new O rings when I put them back..