2. Disconnect the suction hose A from the fuel pump and connect the vacuum pump B.
3. Start the engine and check the vacuum hoses and tubes.
- If there is a vacuum, go to step 4.
- If there is no vacuum, replace the fuel filter.
4. Turn the ignition key to position «OFF».
5. Connect vacuum pump A to the suction pump and apply vacuum to pump B.
- If the vacuum holds, check for a blockage in the suction line and replace the 3-way connection.
- If the vacuum does not hold, go to step 6.
6. Disconnect the vent hose A on the filler side from the three-way connection and place the rubber cap C on the three-way connection.
7. Connect vacuum pump A to the suction pump and apply vacuum to pump B.
- If the vacuum holds, check for a blockage between the 3-way connection to the fuel tank's vapor separation valve on the vent line. If the line is OK, replace the fuel tank.
- If the vacuum does not hold, go to step 8.
8. Connect vacuum pump A to vent hose B at the filler side and apply air pressure to the hose.
- If air pressure holds, check for blockage between the three-way connection and the base of the filler neck on the vent line.
- If air pressure does not hold, go to step 9.
9. Remove the rubber cap from the 3-way connection, reconnect the vent hose to the 3-way connection.
10. Connect vacuum pump A to suction hose B and apply air pressure to the hose.
If the air pressure holds, the vent line and suction line are good.
If the air pressure does not hold, check for vacuum leaks on the suction hose and replace the 3-way fitting.