Hi I am new to the forum. I have a small kids utv with a 125 4 stroke motor. It sat for over a year and I decided to get it running again. Put a new carburetor on it and it ran better than ever. Change oil and fixed the brakes kids probably drove it for a few weeks maybe 3 to 4 hour maybe. Went to put it away after it sat for maybe an hour wouldn't start. Just turns over no spitting or sputtering. Checked compression has 150 psi, getting spark, changed spark plug old one was pretty black. Put new cdi on and coil still nothing. Any ideas would be appreciated thanks.