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I didn't read all the messages and not sure how far you got. Any way I have a few 1800 FI. When I find one the first think I do is start it. What worked for me was hot wire it to get it running. Since most of my cars been sitting for years and rusting, I would forget the gas tank and lines and hook the pump up under the hood. A small contaner of gas. You'd have to disconect some lines and add some temp ones. Once I get gas flowing threw the system then I check spark, a wire from the battery to the coil would by pass the switch. Then another for the starter. I'd also put some gas/oil mix in the spark plug holes and turn the motor to check spark with out the plugs in. That make the motor turn easier and helps get things working inside. Be careful not to get gas all over the motor cause it can start a fire. There is a green wire from the + on the battery that goes to FI electrical stuff. Also another one that works the relay, that one would get conected to the + on the battery with a jumper wire. You should hear the relay click if you got the right one. The injectors can come out to see if they are working. It's not much trouble if they all come out at once. With the fuel pump running and by working the throttle at lease 2 should spray, the motor would have to turn for the other 2 to spray. If you can't get them all to spray then the points in the bottom of the distributor could be dirty. If you work the throttle with the injector in and there is current to the FI you should hear a click sound. Getting back to the gas tank and pump. A temp hot wire to the pump may help. Normally the pump only comes on for a second to two when you first start the car. Once the car is started the pump will run all the time. I ran a temp wire from a parking light in the trunk to the pump. This is just a few things that worked for me. I havn't messed with FI for a while now. I got into pre 70 with carbs. I have a book for the 71. If you need wiring stuff let me know.
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