I "THINK" I may be on to something, but I need the advice of a CIS pro. I am troubleshooting a fuel problem. I removed each of my injectors and placed them into individual metered cups. I jumpered the RPM relay (to activate the fuel pump). Then deflected the air sensor plate to measure what each injector was "injecting". Each one sprays in a perfect pattern, and each one sprays an equal amount of fuel. Now comes the question - with the air sensor plate not deflected, and the fuel pump still running; I noticed each injector is DRIPPING. The dripping stops when I cut power to the fuel pump. When I reconnect power, again not deflecting the air plate, the dripping starts again - on each injector. Is this normal? Or is this a sign of weak injectors? Or am I totally off base, could this be an indication that the pressure regulator in my fuel distributor is not calibrated properly. If I didn't know better, the injectors look fairly new. The part number on each is Bosch 0437 502 022 (014). I am trying to troubleshoot the most enigmatic "over-rich" problem. Watching my Lambda system work perfectly, trying to lean out the car - but it can't lean it far enough. As always I remain appreciative of any help. Regards, Eric VIN# 5557 Dunedin, FL