my truck wont start,, no spark, its getting gas, spark plugs & wires are new.

Hello, This sounds most like a bad ignition coil. Testing the coil is pretty simple, and there are a couple ways to do it. I recommend using youtube to pin down the method you are most comfortable and equipped for, and giving it a shot. If the coil is weak, you will still get a jump from the ignition coil to the wire, but it may not be sufficient to fire a spark plug. Especially if there is no dielectric grease between the plugs and wires, and especially if the spark plug boots are oil soaked.