| 1. Connect a voltmeter with additional wiring to the fuel pump. Press the remote control, measure and record the measured value; approximately 2 volts less than the battery voltage of 12 V. |
| 2. To eliminate the excess pressure to open and close the fuel tank cap. |
 | 3. Disconnect the return pipe to the fuel supply (1) of the branch. Connect via optional adapter hose with a pressure gauge, a second end of the lower volumetric capacity. The picture shows the 4-cylinder gasoline engine. |
| 4. Enable remote control, gradually closing the valve until the pressure gauge shows 3 bar. Leave valve in this position. |
| 5. Release the measuring container. |
| 6. Turn on the remote control for 30 seconds. |
| 7. The magnitude of the recorded voltage value to determine the required minimum amount of supply on the chart. For example: the value of 10 V corresponds to the minimum amount of supply = 500 cm 3. |
| 8. Compare the minimum amount of flow to the measured amount of feed. |
A warning  If the voltage is normal, and the amount of supply is still too low, check to see if kinked or clogged fuel lines are not clogged fuel filter. If everything is in order, check the fuel pump check valve.
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