Air injector question/seal

[288sunny]

2007 300xs 25” shaft 1E002729

I had my air injectors cleaned, all orings and the white Teflon seals replaced. A few questions, better to use DFI oil when installing, 2-4-C or oring lube?
how would you know the Teflon seal is sealing correctly/100%?

[Savage]

I like Parker O-ring lube. It does what it was made for.

[288sunny]

Bump

[496blazer]

2007 300xs 25” shaft 1E002729

I had my air injectors cleaned, all orings and the white Teflon seals replaced. A few questions, better to use DFI oil when installing, 2-4-C or oring lube?
how would you know the Teflon seal is sealing correctly/100%?

I used a small amount of DFI oil. No issues.

[JOE54]

teflon seal would show 0 blow by / heat or carbon build up

[288sunny]

Is it normal for the fuel injector to have some movement/spin. It’s been awhile since I have messed with mine and noticed I can rotate them clockwise/counterclockwise slightly.

[JOE54]

yes f inj will move a little retainer prevents it , direct inj will move much more