Wow. A true case of RF energy coming from your set up. Is the glow driver battery near the engine? If it were me, before trying a different radio set up, I would try different lengths of wire for the hot and the ground going to the engine. If that is unsuccessful I would try to shield the antenna...or the wires for the glow driver.

You might find RF shielding fabric or weave at an electronics store, or strip a section of Coax cable and use the shielding from that.