I have a 1998 Camaro with a 3800 v6 motor and it won't start. Whenever you try to start it it will turnover but not start. When it first started if I would try to start it 3-4times it would fire and then I would be able to start easily the rest of the day but the problem would start again the next day, but it has gradually gotten worse. I have replaced the camshaft and crankshaft sensors and it still has the problem. Any ideas guys? I'm to my end with this car.

 

Do you have any flashing codes ? do you have good fuel pressure ? have you checked for spark from plug wires
disconnect one of the plug wires place it next to header and see if it sparks when you try to crank it