I have a 2006 Pontiac g6 with 150,000 miles on it. Maybe once a day for the past couple weeks when I go to start it it will crank but not start. As soon as I attempt to start it again it starts up no problem. I used carburetor cleaner on it once and the problem stopped for a couple days. The car runs and drives smooth and it doesn’t idle hard at all. Does anyone know what this could be? It’s getting extremely annoying.
I had the same problem on my 350z. Found out it was the crankshaft sensor. Mine had 4 of them. Dont no how many u have but I found the one was causing problem fixed