I've been dealing with my 2000 blazer not starting for a a week now. It cranks good and strong but wont start. But also some days it will start.I have got it to start by cranking till you hear it start to catch. Then ill press the pedal alittle bit and it'll catch and run fine. My fuel pressure is 62psi and holds steady. I have spark but to be honest i have some cheap bosch spark plugs in there. I plan on changing them to AC Delco tommorow and see if this fixes my problem. Ive also replaced my crank shaft postion sensor. So what do you think???

 

did you run a leak down test ?

 

The guy working on my car says its fine. The fuel pump was replaced less then a year ago