No really just gettin going . For example on ice the other day I just put feet on ice and opened up then jumped on. Need to drive hard ! Did notice plug cap was loose on wire and retightened. Possibly it?
Start your sled up in the dark and look around the plug caps to see if they are arcing to the head. If it has choke pucks on it make sure you have them adjusted with the proper play and they are sliding freely.