Yes, I undid the nuts at both ends of the delivery
lines. I don't recall
the order but at the pump you have to remove outer ones in order to get a wrench on inner ones. Also loosen the strap clamp going across the delivery
lines - makes it easier. They should lift
off as a unit. Then remove the fuel return line assembly at the top of the injectors.
Two of the delivery lines cost about 28USD each and one of them was about 98USD. They all look similar sized and no one could explain why the one was so expensive. I replaced them because they were very rusty and I did not want to develop pinholes.
The injectors cost about 200USD for three to be rebuilt at a local shop. When you pull them, if the injector nozzle tip is burnt, time for a rebuild
Clean everything before you replace.
Do you have the workshop manual? That lists the injector tightening torque as 60-70 Nm (44.3-51.6 ft lbs)