870127 Volvo.Penta Insulating bushing

Table 1
Event Codes
CDL Code and Description Comments
E198(1)
Low Fuel Pressure The fuel pressure in the low-pressure system is below the trip point for the programmed delay time.
The code is logged.
E198(2)
Low Fuel Pressure The fuel pressure in the low-pressure system is below the trip point for the programmed delay time.
The code is logged.
The engine power is derated.
E198(3)
Low Fuel Pressure Probable Causes
Diagnostic codes and event codes
Fuel level
Vent port at the fuel tank
Fuel pressure sensors
Fuel pressure regulating valve
Fuel priming pump
Fuel transfer pump
Fuel transfer pump pressure relief valveRecommended Actions
Note: The procedures have been listed in order of probability. Complete the procedures in the order of the listed test steps.
Table 2
Troubleshooting Test Steps Values Results
1. Check for Codes
A. Connect Cat® Electronic Technician (ET) to the service tool connector. Refer to Troubleshooting, "Electronic Service Tools", if necessary.
B. Download the "Product Status Report" from the engine ECM before performing any troubleshooting or clearing diagnostic trouble codes.
C. Determine if the diagnostic trouble code that directed to this procedure is present.
D. Look for active diagnostic codes that are associated with the system for the event code that directed to this procedure.
E198
Result: An associated code is present.
Repair: Troubleshoot any associated codes before continuing with this test.
Result: An E198 is present.
Proceed to Test Step 2.
Result: No active codes
STOP
2. Check the Fuel Level in the Tank
A. Visually inspect the fuel level in the fuel tank. Ensure that the fuel tank contains enough fuel to operate the engine.
B. Ensure that the fuel supply valve (if equipped) is in the full OPEN position.
Fuel
level
Result: The fuel level is OK.
Proceed to Test Step 3.
Result: The fuel level is not OK.
Fill the tank. Verify that the problem has been resolved.
If the problem is not resolved, proceed to Test Step 3.
3. Inspect the Fuel Tank Vent Port for Debris
Vent
Result: The fuel tank vent is not plugged.
Proceed to Test Step 4.
Result: The fuel tank vent is plugged.
Repair: Clear any restrictions with compressed air.
Do not allow debris to enter the fuel tank while you clean the cap. Damage to the fuel system will occur.
If the problem is not resolved, proceed to Test Step 4.
4. Verify the Fuel System Is Primed
A. Drain the water from the primary filters. Refer to Operation and Maintenance Manual, "Fuel System Primary Filter (Water Separator) - Drain".
B. Verify that the fuel system is properly primed. Refer to Operation and Maintenance Manual, "Fuel System - Prime".
C. Start the engine and allow to operate for 1 minute.
D. Check for codes.
Codes
Result: An E198 is present.
Proceed to Test Step 5.
Result: A code other than E198 is present.
Repair: Refer to the appropriate troubleshooting story.
If the problem is not resolved, proceed to Test Step 5.
5. Check the Fuel Pressure Sensor
A. Apply electrical power to the engine.
B. Connect to Cat ET.
C. Monitor the "Fuel Pressure" in the status screen.
Fuel pressure
Result: The fuel pressure reading is 0.0 11 kPa (0 2 psi).
Proceed to Test Step 6.
Result: The fuel pressure reading is not 0.0 11 kPa (0 2 psi).
Repair: Replace the fuel pressure sensor.
Proceed to Test Step 8.
6. Check the Fuel Pressure Regulating Valve
Note: A fuel pressure regulating valve that is stuck in the open position may cause low fuel pressure. If a problem with the valve is suspected, the problem is probably caused by contamination or debris lodged between the valve and the valve seat.
A. Remove the valve assembly from the fuel filter base. Inspect the valve assembly for contamination or debris. Clean any contamination or debris that may keep the regulating valve open. If debris is present, find the source of the contamination.
B. If the fuel pressure regulating valve is the suspected cause of the low fuel pressure, replace the valve assembly.
Valve
Result: An E198 was not active.
The repair is complete. Return to service.
Result: An E198 was active.
Proceed to Test Step 7.
7. Check the Fuel Priming Pump
Note: The electric fuel priming pump is used to prime the low-pressure fuel system prior to engine starting. The low-pressure fuel system must be pressurized to at least 250 kPa (36 psi) (gauge) to open the check valves for the high-pressure pump.
A. Prime the fuel system. Refer to the Operation and Maintenance Manual, Fuel System - Prime.
B. While the priming cycle is running, monitor the "Fuel Pressure" in Cat ET.
Priming
pump
pressure
Result: The pump generates greater than 250 kPa (36 psi).
Proceed to Test Step 8.
Result: The pump generates less than 250 kPa (36 psi) the correct pressure.
Repair: Test the pump. Refer to Troubleshooting, "Fuel Priming Pump - Test".
If the problem is not resolved, proceed to Test Step 8.
8. Inspect the Relief Valve for the Fuel Transfer Pump
A. Inspect the relief valve for the transfer pump. The spring must move freely.
Relief valve
Result: The relief valve is stuck closed.
Repair: Replace the fuel transfer pump relief valve.
Result: The relief valve is OK.
Repair: Clean the relief valve.
Run the engine at high idle for 3 minutes to verify that the repair resolved the issue.
If the problem is not resolved, proceed to Test Step 9.
9. Check the Fuel Transfer Pump
A. Use Cat ET to monitor the "Fuel Pressure".
B. Ensure that the fuel pressure remains above 500 kPa (72 psi) (gauge) after the engine has started.
Transfer
pump
pressure
Result: The pump did not generate the correct pressure.
Repair: Replace the fuel transfer pump. Inspect the fuel transfer pump drive coupling before installation of the new pump.