4.
Art the fuel quality, fuel tank and fuel filter normal?
 | ▶ Go to "Fuel pressure inspection" procedure as below. |
 | ▶ Repair or replace fuel, fuel tank and fuel system. |
Inspect fuel leakage visually from fuel tank and fuel pump mounting point.
Inspect fuel quality and inside of fuel tank after removing fuel pump.
Check contamination of fuel filter and foreign substances in the fuel filter.
Art the fuel quality, fuel tank and fuel filter normal?
| ▶ Go to "Fuel pressure inspection" procedure as below. |
| ▶ Repair or replace fuel, fuel tank and fuel system. |
Measure the fuel pressure at idle after installing a fuel pressure gauge to delivery pipe.
☞ Install a fuel pressure gauge after combustion in the fuel line by removing fuel pump relay.
■ Specification : 3.3~3.7㎏f/㎠ (324 ~ 363㎪, 46.9 ~ 52.6psi)
Is fuel pressure within the specification?
| ▶ Go to "Fuel remain pressure inspection" procedure as below. |
| ▶ Repair or replace fuel filter and fuel hose. (whether it is blocked or not) |
Monitor fuel pressure at fuel pressure inspection as above.
Engine "STOP"
Check decrease in fuel pressure.
■ Specification : After engine stops, the gage reading should hold for about 5 minutes.
Does the fuel pressure remain after engine stop?
| ▶ Fuel supply state is OK. |
| ▶ Repair or replace fuel leakage in the fuel filter and fuel line. ▶ Replace the fuel pump.(Check valve does not remain pressure.) |
