HDI and different ecu's

[Ruan]

I've had some 072 injectors that I need to install for a while.

I'll get them installed and report back.

Before installing used injectors do you ever remove the nozzles, clean them and the needle?

I normally use caustic soda (can of oven cleaner) to clean the carbon and residue off. Most the time I've taken the nozzles off I've noticed some brown discolouration along the needle.

Personally wouldn't hit them with anything that caustic, at most I'd disassemble and ultrasonic the parts. Just make sure you don't mix up any of the parts from each injector.