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So, RJ Sounds to my (unexperienced) ear like you've got plugged injectors. Assuming, I guess, that you've checked compression, that there's fuel pressure AT the injectors, spark, (there's a cool translucent plug you used to be able to buy...) and so on. But heck, if you're scoping the injectors, you must have checked everything else! Toby 65 notch 72 square RJ Latherow wrote: > > I was taking the tester info with a grain of salt- the engine has been > missing on 2 cylinders ever since I got her running. pull off the plug > wires, no change. So I ruled it down to either a mechanical (valve, head, > piston, motor stuff) problem or a fuel problem. So.... > > Using the tester I make the injectors fire (they go put-put-put-put-put-) so > I can see if they are doing anything. Nothing. My multimeter won't really > catch the voltages- Its too quick and those digital ones suck at quick > changes.... > > So I break out the ocilliscope, hook it up to the wires that go to the > injector. I see that its getting a 12 volt pulse every 1/2 second or > so....just like the other 2 only these 2 aren't firing.... > > So I assume, hey, its getting voltage, so it must be the injectors... > > Am I wrong somewhere? The FI is a new beast to me.... Do the > injectors get their ground from somewhere else??? I assume they were > isolated electrically with only the connector to server their needs....