Fuel Pressure
使用电子维修工具或使用 1U-5470 发动机压力表总成 检查发动机的燃油压力。
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| 图 1 | g01192577 |
1U-5470 发动机压力表总成 (1) 压力指示器 (2) 零位调整螺钉 (3) 压力指示器 (4) 测压口 (5) 压力指示器 | |
此工具总成具有用于读取燃油歧管压力的压力表。 此工具总成附带一本专门说明书, GMGO8907。
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| 图 2 | g00284797 |
燃油歧管和油管 (6) 通向缸盖的供油管 (7) 燃油歧管 | |
燃油压力调节阀将燃油歧管 (7) 内的燃油压力保持在 415 至 450 kPa (60 至 65 psi )之间。 断开任一燃油管 (6) 。 在此油管和歧管之间安装一个三通管以便检查燃油歧管内的压力。 将 1U-5470 发动机压力表总成 连接到三通管上，然后使发动机运转起来。
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| 图 3 | g01290055 |
此为燃油输油管和燃油滤清器油管的图解。 (8) 通向注油泵的进油管 (9) 螺塞 (10) 从燃油滤清器到燃油歧管的油管（已过滤的机油） (11) 燃油注油泵适配器 (12) 来自输油泵的燃油管 (13) 燃油滤清器 | |
输油泵的出口燃油压力可在燃油注油泵适配器 (11) 上的螺塞 (9) 处进行检查。
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