I am tracing down a vacuum leak. My injector seals are the only things i did not change after the head gasket....

I am changing the seals now, but one of my injectors has a partially broken pintle cap...i can't find these, and i am not sure if they have any affect on the performance? the seals are very dry and I am sure they were the source of the leak.....





It does not seem to me to be essential for sealing as the rubber seal is what seals the pressure....

what do you guys think?

Thanks,

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1993 300E, 2.8 M104 .....