Fuel Pressure Test
- Release fuel pressure. Ensure ignition is off. Connect fuel pressure gauge between fuel distributor port and end of fuel line to cold start valve. Disconnect differential pressure regulator harness connector.
- Start engine and let it run. System fuel pressure should be FUEL PRESSURE SPECIFICATIONS (2.0L)
table. If fuel pressure is greater than specification, go to next step. If system fuel pressure is less than specification, perform fuel volume check. If fuel volume is okay, release fuel pressure and replace fuel pressure regulator.
- Release fuel pressure. Remove return hose from pressure regulator and place in a container. Repeat test. If pressure is incorrect, release fuel pressure and replace fuel pressure regulator. If system pressure is okay, check for restricted fuel return line. Repair as necessary. Go to next step.
- Turn ignition off. After 10 minutes, residual pressure should see FUEL PRESSURE SPECIFICATIONS (2.0L)
table. After 20 minutes, residual pressure should be, see FUEL PRESSURE SPECIFICATIONS (2.0L)
table. If system fuel pressure is low, check fuel pump check valve, sensor plate free play, fuel distributor "O" rings and seats. Release fuel pressure and replace if necessary. If these components are okay, release fuel pressure and replace fuel pressure regulator.
FUEL PRESSURE SPECIFICATIONS (2.0L)
| Function |
psi (bar) |
| System Pressure |
| With Engine Idling |
36.3 (2.5) |
| With Engine Idling |
43 (3.0) |
| Residual Pressure |
29 (2) |