Exhaust System Contains Coolant
使用以下步骤对排气系统中的冷却液故障进行故障排除。
可能原因
- 废气再循环（EGR）冷却器泄漏
- 缸盖密封垫泄漏
- 缸盖泄漏
建议的措施
注: 下面以概率的先后顺序列出了这些步骤。 依次完成这些步骤。
Show/hide table
| 故障诊断与排除测试步骤 | 数值 | 结果 |
|---|---|---|
1. EGR 冷却器 A. 使用"发动机上测试步骤"检查 EGR 冷却器有无泄漏。 请参阅系统操作、测试和调整, "排气冷却器（NRS）- 测试"。 |
EGR 冷却器 |
结果：EGR 冷却器泄漏。 修理：更换 EGR 冷却器。 有关正确步骤，请参阅拆解与组装手册。 转至步骤 5。 结果：EGR 冷却器没有泄漏。 转至测试步骤 2。 |
2. 缸盖密封垫泄漏 A. 检查缸盖密封垫有无泄漏。 有关检查缸盖的正确步骤，参考系统操作/测试和调整。 |
缸盖垫片 |
结果：缸盖密封垫泄漏。 修理：更换缸盖密封垫。 参考拆解和组装手册。 结果：缸盖密封垫没有泄漏。 转至测试步骤 3。 |
3. 缸盖 A. 检查缸盖中有无裂纹。 对缸盖执行泄漏测试。 有关检查缸盖的正确步骤，参考系统操作/测试和调整。 |
缸盖 |
结果：在缸盖内发现裂纹。 修理：修理和/或更换缸盖。 参考拆解和组装手册。 结果：缸盖中没有裂纹。 请联系代理商解决方案网络 (DSN)。 |
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