Where is the fuel pressure gauge on a corvette?
Fuel pressure can be measured at the Schrader valve on the fuel rail with a fuel pressure gauge. Many of the original stock fuel pressure regulators were not adjustable. If fuel pressure is not within specifications, check the fuel filter, fuel pump and regulator in that order. “1986 Corvette Shop Manual”; General Motors; 1996.
What should the pressure be on the fuel system?
Check the video at the start of this section so that you have an idea how to do a maximum pressure test. If you need to replace the fuel pressure regulator—or whenever you need to disconnect any part of the fuel system—relieve fuel system pressure before beginning to work on the system. Fuel pressure on some models can reach up to 60 psi (414 kPa).
When to do a fuel pressure test on your car?
If your car is idling or running weird (high idle, low idle, hard to accelerate, studdering, hard to start) then this is one of the first tests you should do. Diagnose high fuel pressure, low fuel pressure, a broken check valve in the fuel pump, broken fuel pressure regulator, or leaking injectors.
How to test a fuel pressure regulator ( FPR )?
Testing for Maximum Pressure The easiest way to test an FPR is with the use of a fuel pressure gauge. But first, you’ll start your tests with a quick preliminary check: 1. Open the hood and locate the fuel pressure regulator on one end of the fuel rail. This rail holds the fuel injectors in place.
How can you test the loss of fuel pressure?
With a fuel pressure gauge, we can measure the loss of fuel pressure. To test residual pressure, we start the vehicle and note the fuel pressure as in the idle pressure test. Switching the ignition off will cause fuel pressure to drop slightly. The pressure should remain at this point and not return to zero.
Check the video at the start of this section so that you have an idea how to do a maximum pressure test. If you need to replace the fuel pressure regulator—or whenever you need to disconnect any part of the fuel system—relieve fuel system pressure before beginning to work on the system. Fuel pressure on some models can reach up to 60 psi (414 kPa).
Testing for Maximum Pressure The easiest way to test an FPR is with the use of a fuel pressure gauge. But first, you’ll start your tests with a quick preliminary check: 1. Open the hood and locate the fuel pressure regulator on one end of the fuel rail. This rail holds the fuel injectors in place.
How do you test residual pressure on a car?
To test residual pressure, we start the vehicle and note the fuel pressure as in the idle pressure test. Switching the ignition off will cause fuel pressure to drop slightly. The pressure should remain at this point and not return to zero. Fuel pressure that drops quickly shows a leak in the residual pressure system.