信息指导

如何检查汽车中的油压

This guide will show you how to check the oil pressure in a car and how to check if the oil pressure sensor is bad.

您的发动机的油压对于电机的寿命和功能至关重要。当油压不正确时，发动机陷入困境，可能面临昂贵的维修。这就是为什么定期测试油压很重要。我们将向您展示如何检查汽车中的油压以及如何检查油压传感器是否差。

An Overview Of Oil Pressure

油压对于内燃机的耐久性至关重要。用泵通过系统强制油，在那里它润滑了发动机的轴承和其他金属部件。当电动机接收到足够的油压时，金属部件从未彼此接触。否则，对这些部件有显着的磨损，最终导致发动机故障。

To ensure the engine is receiving the right amount of oil, you should use anoil pressure gauge. This diagnostic tool alerts you if the oil pressure becomes too low or exceeds normal limits. When a warning occurs, it's imperative that you address the problem immediately.

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两种基本类型的油压仪表

加热器tric Oil Pressure Gauges

加热器tric current enters the gauge through a power supply and travels through the wire-wound coil in the needle's pivot point to move it across the gauge. The reading is determined by the current flow.

Mechanical Oil Pressure Gauges

The gauge taps into the oilway through a small-bore pipe made from plastic or copper. Oil is fed into the gauge's bulb from a supply pipe that produces the same pressure as the engine. As the bulb straightens under pressure, the needles move on the scale.

How To Read/Check An Oil Pressure Gauge

当您了解如何检查油压时，最好始终最好参考车辆的所有者手册。以下是一些基本指南，应该帮助您弄清楚如何检查油压仪以及读数意味着什么。

零读

You figured out how to check oil pressure in a car, but the reading is zero…now what? Most likely, your oil pressure gauge is faulty, but it could also mean that the engine needs oil or the pump has broken. Fill up the oil and test the pressure again.

高读数

High oil pressure might indicate a stuck pressure relief valve or an oil delivery line blockage. When you run your vehicle with high oil pressure, there's a chance that theoil filtercould burst, which would lead to bigger issues.

低读数

您想知道如何检查低油压，因为这对您的车辆最有损害。它可以表明衡量标记本身的问题，但最有可能意味着有一个磨损的发动机部件，例如轴承或泵。它也可能指出过热的发动机油。无论哪种方式，你都会立即检查系统是至关重要的，因为发动机没有获得它需要正确运行的油。

Check Your Car’s Oil Pressure (Step-By-Step Guide)

You can learn how to check oil pressure on a car with a few simple tools and basic expertise. Start by gathering these tools.

You also want to ensure safety is a top priority. That's why you should equip yourself withmechanic gloves，长袖衬衫，以及某种形式的eye protection. Keep all of your tools nearby so that you can reach them quickly.

  1. 1
    如果需要更多的间隙，请抬起车辆的前部。
  2. 2
    找到油压发件人。它应该在发动机块上的油槽附近。
  3. 3
    Put your oil drain pan beneath the vehicle to catch any spillage.
  4. 4
    Take off the electrical connector from the oil pressure sender.
  5. 5
    Take off the oil pressure sender from the engine with the correct socket.
  6. 6
    Attach the oil pressure kit and mount your tester.
  7. 7
    Top off the engine oil if needed.
  8. 8
    Allow the engine to run until it reaches normal operating temperatures.
  9. 9
    检查制造商推荐的RPM的油压范围（在用户手册中找到）。
  10. 10
    Have your helper maintain that RPM while you record the readings.
  11. 11
    Turn off the engine and allow it to cool.
  12. 12
    删除测试仪。
  13. 13
    重新安装油压发件人和电连接器。
  14. 14
    Lower your vehicle back down carefully.

Here's a helpful video illustrating how to check oil pressure manually.

People Also Ask (FAQs)

Can you drive a car with low oil pressure?

Driving your car with low oil pressure can ruin the engine. As soon as you notice the Oil Light or low pressure, you should stop driving until you resolve the issue.

Will an oil change fix low oil pressure?

轻微的油粘度变化可以增加油压，但往往最好找出导致问题并在发生更多伤害之前修复它。

How do I increase oil pressure?

You can increase the viscosity of the motor oil or find the component that's going bad and replace it.

全合成油会导致油压低吗？

合成或不同的SAE油可以导致压力增加或降低，这取决于先前在系统中的油的变化。

您需要多久一次测试油压？

Normally, the in-dash oil pressure gauge will tell you the accurate pressure. The only time you need to know how to check oil pressure without a gauge is when there is a problem.

Can a dirty oil filter cause low oil pressure?

脏滤水器不仅可以降低油压，而且使用错误的过滤器会导致相同的问题。

How do you check oil pressure on a semi hermetic compressor?

When you work with a semi-hermetic compressor, you must subtract the crankcase pressure from the oil pump outlet pressure.

Do you need to remove all spark plugs for compression tests?

是的火花塞must be removed, plus you should open the carburetor throttle and run the car at normal temperatures.

Should compression tests be done hot or cold?

All of your compression tests should be performed when the engine reaches normal operating temperature.

Conclusion

As you learn how to check oil pressure, you help protect your car engine from wear. It's just one more step to ensuring you have a vehicle that can take you down the road for many years into the future.

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