[edhtrd71]

Its what the 95-2000 5.7 vortec used for fuel injection. CSFI, on a bench it looks like a spider. They can be a real pain in the butt some times. They clog easily and need a lot more fuel pressure to start than everything else. Most don't need replacing as they usually just clog. There is a kit to run compressed nitrogen to them at high pressure and then turn them on with a scan tool. Some will pop right open but some can be quite tough to get flowing again. There is a kit to replace the whole setup with a more typical style injector.