thanks. I have the same thought.

回答: 班主是否能再多解釋解釋。QYZ2010-03-22 10:32:17

Basically I thought there should be 3 reasons:
1. spark plug defect;
2. Coil defect (it may cause extremely high voltage;
3. spark plug was not installed properly;

reason no. 1 has the highest possibility.

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