Grenade jump help

This is my first ever post. I’m hoping a fellow spartan can help me out with something i just can’t seem to get right when trying to get some of the harder to reach skulls on halo 3. I have been trying get the grenade jump right but i always seem to blow myself up every time. Does anyone know a foolproof way of doing the grenade without blowing the daylights out of myself. Any help with this would be greatly appreciated.

Only use frag nades and try to start your jump about 1 or 2 body lengths from the nade.

You can add me to your friends list and I’ll help ya, may take me a min to remember how, haven’t gone on a skull run i’m years.