If you are going to do some of it, I recommend do it all. Injector seals,
(O rings) and seats. The old stuff in there is brittle.(seats and seals).
Replace it all. And yes, once the fuel lines are off the injectors, unlock the injectors then just lift up with a twisting motion.

I recomend blowing the area around the injectors well with an air compressor if available or get a couple of cans of compressed air(the kind used to keep your computor keyboard clean) to avoid debris from falling into the injector hole.

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Selling used Mercedes parts on Ebay...always changing...
cdplayer51 take a look!
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