This machine came to us with a no start. The machine went another so called dealer and the hacked the harness. The initial issue was back firing through the intake. It has the Hyundai engine. Right now I have no fire to the plugs and no throttle body control. All my wires to the throttle body are shrted together. I depress the accelerator 3 times within 5 seconds and I cant get any codes to come up. Apperently there were 10-14 codes. Anyone has any info they can send me would be appreciated. We have no local dealer for Doosan anymore.