Wife's truck in the driveway and it won't start. Haven't done much more than routinely maintenance oil/filter,air filter, brakes, & rear shocks. Nothing around the fuel system. Last week wife ran a few errands and on her third stop the car won't start. The engine turns over but won't start. It was during a rain storm so I suspected something got wet as the car finally started after 5 tries later (in a 3-4 min span). Two days later same sort of thing; after a few errands and car won't start the finally it does after 5-6 tries it fires up and all is fine. Well today it does NOT start but luckily she's in the driveway and I'm trying to figure out how to diagnose the problem.
Unrelated to this incident is the engine light has come on and off for the last year. Codes P0325 - Knock Sensor, Bank 1, and P0158 - Rear O2S, Bank 2. Needless to say I haven't done a thing to fix that either. So could this at all be related?
She's been running the gas tank low the last two times before filling. Since I never changed the fuel filter I figure that's would be a good place to start. I'll see if that tells me anything. Any thoughts on what else to check would be greatly apprecated. Thanks.