QUOTE(AnthraxBird @ Sep 20 2016, 08:29 AM)
Hey guys, new here. My buddy and I are working on a 72 1.7L and it's only running on 1 and 3. Cleaned and checked the trigger points, still no dice. Now, when you unplug the connector for the trigger points, it runs on all 4, for about 3 seconds til it starves of fuel. Input?
Look at my web page for suggestions. I recommend you test every component in the FI system for basic operation, my page has info on how to do this. For your specific problem, test the trigger points, the wiring harness (both the TC's, grounds, and the injector leads). If you have spares (which everyone who has a nearly 50-year-old car should have
), swap in known good/new TC points and ECU.
You might also want to consider buying a noid light for Bosch injection, it visually shows whether an injector is firing or not.
https://www.amazon.com/OTC-7188-Bosch-Noid-...e/dp/B000P72CMW