What psi should my fuel rail be?
What Psi Should Fuel Rail Pressure Be? It will always take 58psi for the rail to maintain pressure, regardless of the operating condition (less than sufficient fuel to keep the pump running).
Does obd2 show fuel pressure?
You can actually check fuel pressure with OBD 2 scanner, which will give you readings from the fuel pressure sensor. If you don’t have a scanner, you can listen to a buzzing sound when you try starting your car, which indicates that the fuel pump puts pressure on the system.
What is the fuel pressure on an EFI fuel system?
Most EFI regulators are adjustable from as low as 30 PSI to as high as 70 PSI, so those who want 43 PSI for the fuel rail will be able to use the same pump and regulator combination as those who want 60 PSI. Just be sure the pump provides the necessary flow at the pressure you need.
What happens if fuel rail pressure is too high?
The Importance of Correct Fuel Pressure If fuel pressure is too high, your vehicle’s engine could be over fueled, leading to many of the symptoms listed below. Some of these symptoms include your engine running rough, poor fuel economy and black smoke from the exhaust.
What pressure should the fuel pressure be set at the regulator?
For a GM, this pressure is usually set to 58psi (factory fuel pressure in the rail). The vacuum/boost referenced regulator will help to change the pressure in the rail based on the pressure in the manifold. When an engine is idling, it may be pulling 20 inHg of vacuum, which translates to roughly 10psi.
How long should a fuel injection system hold pressure?
For the specification we must consult service-data, but the system should hold some pressure for about five-minutes.
What are the symptoms of high fuel pressure?
Symptoms of High Fuel Pressure
- Check engine light.
- The exhaust gives off fuel smell.
- Low fuel economy and constant refuelling.
- Poor engine performance.
- Blackened spark plugs.
- Spark plugs that are wet with fuel.
- Restrictions in return line.
What should my fuel rail pressure be kPa?
Required fuel pressure can vary depending on your vehicle’s engine and fuel system. Carbureted engines may require as little as 28 kPa (4 PSI), while modern multipoint fuel injected high-performance engines can require as much as 414 kPa (60 PSI).