Why is the unstable gasoline generator on fire?

First check the low voltage circuit to see if the wires are connected and the wiring points are loose, then connect the middle wiring points in order. The broken point is between the points on the ammeter and those that are not responding. If there are iron bumps in the low voltage circuit, use temporary wires to replace each section of wire. If the current indication returns to normal, iron bumps should be checked in the replaced section. If it is very difficult to start, is very unstable after starting and is accompanied by backfiring and a whooshing noise from the exhaust pipe, reinsert the high voltage wires from the separate cylinders in the ignition sequence. -separate cylinder tension wires are inserted in the wrong order. If this still doesn't work, remove the spark plug to clean the carbon deposits or replace it with a hotter plug. And checkCheck if there is a leak in the flame distribution head.