One or more cylinders of C30 wing of the Great Wall frequently catch fire. Phenomenon: the cylinder is missing. If you can't speed up, please kneel down and ask the gods for advice ... just found this

One or more cylinders of C30 wing of the Great Wall frequently catch fire. Phenomenon: the cylinder is missing. If you can't speed up, please kneel down and ask the gods for advice ... just found this problem. Hello, although you didn't mention the number of kilometers, you can basically confirm that there are two reasons: 1, valve clearance problem, which leads to air leakage when the mixer burns, resulting in insufficient cylinder pressure and power. If the exhaust valve clearance is large, the exhaust will be insufficient, and the power will also be insufficient. 2. If there is no problem with the valve clearance, the valve is ablated, resulting in air leakage of the valve and insufficient cylinder pressure until the cylinder is missing. The above two reasons will cause the tester to report the fault code: single cylinder misfire or multi-cylinder misfire, which has nothing to do with the injector. The biggest possibility is what I said 1 point. Just adjust the gap.