Re: Car wont run
So measure the battery voltage with engine off, which should be 12.7 V when completely charged or around the 12V when almost discharged, and measure it again with the engine running, which should get you a 13.5-14 V.
When you start the engine, is the starter turning fast, or does it turn slow, which already could be an indication of low battery voltage.
You didnīt put any fuel injector cleaner in the fueltank by the way during the tuneup? I had done that before, and ended up with acceleration problems. I didnīt measure the fuel pressure, but after changing the fuel filter/pressure regulator, the problem was solved.