The spark plug must form a good seal inside the cylinder head to avoid leakage of without the high-tension current shorting-out.

火花塞必须在汽缸盖内形成良好密封以防止燃烧过程气体高压泄露，并且能够继续工作而且高压电路没有短路。

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The spark plug must form a good seal inside the cylinder head to avoid leakage of without the high-tension current shorting-out.

火花塞必须在汽缸盖内形成良好密封以防止燃烧过程气体高压泄露，并且能够继续工作而且高压电路没有短路。

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