I recently bought the parts to rebuild EV1 (34.6# @ 43.5psi) injectors. The parts include the microfilter, flat support disk (for the injector end), and the supporting top cover (for the fuel rail end).
The reasons for replacing these parts are fairly simple:
- Microfilter - start fresh on used injectors
- Flat support disk - old ones were crumbling from use
- Supporting top cover - everything else was getting changed, should change these too
There's no issue with the microfilter, either taking the old ones out or putting the new ones in. I stuck a decking screw in my vise, point up, then screwed the old microfilter (still in the injector) onto the screw. With a little bit of wiggling and pulling, the injector pulled free with the filter still on the screw. Worked pretty slick. I can then press the new microfilter into the injector without too much of an issue.
It's the support disk and top cover I'm worried about installing. I want to ensure not only do I get these on there correctly, but I don't damage the new parts in doing so. These have a very tight fit on the injectors. What is the proper method for installing these onto the injectors without damaging them?