[patkeefe]

I have my engine out for electrical work. I pulled the entire CIS off in one piece. I have long overlooked the fact that the fuel injector sleeves are a bit loose, so now is a good time to fix them.

Do they break easily? I can either push them or pull them out. And, more importantly, I suppose there is some sort of seal between the sleeve and the manifold runner? O-ring? Do the sleeves wear, or does the seal degrade? So, do I need new sleeves or just new seals?
TIA
Pat