Be careful not to grip them to hard with the pliers when pulling the old ones off. You can crimp the nipples on the injectors. Making a cut with a razor blade , helps to get them off without a struggle. Hose grip pliers are nice to have

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1999 E300DT (131,800) 154,000 Black on Black SOLD

2006 CLK 500 coupe Capri Blue on Grey (zoom,zoom)
47,000mi

04 VW TDI Passat 80,000mi
(Techno)

How to eliminate oil dependency through market-driven approaches.
“We could cut oil use in half by 2025, and by 2040, oil use could be zero,”
The Sound of Diesel Speed
Ode to MB