Cylinder Is Noisy
- Active codes and logged codes
- Low quality fuel
- Injectors
- Lack of lubrication
- Valve train components
- Gear train and components of the lower end
Note: The procedures have been listed in order of probability. Complete the procedures in order.
Show/hide table
| Troubleshooting Test Steps | Values | Results |
|---|---|---|
1. Active Codes and Logged Codes A. Establish communication between Cat® Electronic Technician (ET) and the Electronic Control Module (ECM). B. Download the "Warranty Report" from the engine ECM before performing any troubleshooting or clearing diagnostic trouble codes. |
Codes |
Result: A diagnostic trouble code is not active or logged. Proceed to Test Step 2. Result: A diagnostic trouble code is active or logged. Troubleshoot the active or logged codes. If the problem is not resolved, proceed to Test Step 2. |
2. Low Quality Fuel A. Refer to Operation and Maintenance Manual for information on the proper characteristics of the fuel for the engine. If necessary, obtain a fuel analysis in order to confirm that the correct fuel is being used for the engine. Refer to Systems Operation/Testing and Adjusting, "Fuel System Quality Test" for the proper procedure. |
Fuel |
Result: The fuel quality is OK. Proceed to Test Step 3. Result: The fuel quality is not OK. Repair: Replace the fuel. If the problem is not resolved, proceed to Test Step 3. |
3. Inspect the Injectors A. Perform the "Injector Solenoid Test" on Cat ET in order to determine if all of the injector solenoids are being energized by the ECM. B. Access the "Cylinder Cutout Test" in the "Diagnostic Tests" under the "Diagnostics" menu. C. Perform the "Automatic Cylinder Cutout Test" on Cat ET. |
Injector Solenoid Test or Fuel System Verification Test |
Result: The test was successful. Proceed to Test Step 4. Result: The test was not successful. Repair: Diagnose the problem and then repair the problem. Reset all active codes and clear all logged codes. If the problem is not resolved, proceed to Test Step 4. |
4. Lack of Lubrication A. Check for proper lubrication of the valve components B. Check for blocked oil passages. Oil passages must be clean. Clean any oil passages that are questionable. Refer to the Disassembly and Assembly for additional information. |
Lubrication |
Result: The oil passages are OK. Proceed to Test Step 5. Result: The oil passages are NOT OK. Repair: Make the necessary repairs. If the problem is not resolved, proceed to Test Step 5. |
5. Valve Train Components A. Check the valve lash. Refer to Troubleshooting, "Valve Lash Is Excessive". B. Check for damage to valve train components. Remove the valve cover from the suspect cylinders. Check the following items for damage: 1. Camshaft 2. Valve rotocoil 3. Valve springs 4. Camshaft followers 5. Rocker shaft 4. Bridges 5. Pushrods Refer to the Disassembly and Assembly for additional information. C. Check for valves that do not move freely. Remove the cylinder head and inspect the valves. Refer to the Disassembly and Assembly for additional information. |
Valve train |
Result: The valve train components are not damaged. Proceed to Test Step 6. Result: The valve train components are damaged. Repair: Make the necessary repairs. If the problem is not resolved, proceed to Test Step 6. |
6. Gear Train and Components of the Lower End A. Inspect the gear train and lower end components. |
Gear train |
Result: The gear train or lower end components are damaged. Repair: Replace any damaged parts. |
Caterpillar Information System:
Differences in Appearance of Cat ® Reman Parts when Compared to New Parts {1000, 1250} Differences in Appearance of Cat ® Reman Parts when Compared to New Parts {1000, 1250}
3512C Engine Engine Oil Pan - Disassemble
C8.7 and C12.9 Marine Engines Valve Lash Is Excessive
WS063, WSF063 and WSP063 Well Stimulation Pumps Gearbox (Input Drive) - Remove and Install
CX31 and CX31 HT On-Highway Transmissions (Cat Truck) Oil Filter (Transmission)
C175-16 Petroleum Engines Engine Oil Pressure - Test
3512C Engine Engine Oil Pan - Remove and Install
CX31 and CX31 HT On-Highway Transmissions (Cat Truck) Relief Valve (Torque Converter Inlet) Pressure - Test
CX31 and CX31 HT On-Highway Transmissions (Cat Truck) Relief Valve (Transmission Hydraulic Control) - Test and Adjust
3512C Engine Engine Oil Filter Housing - Remove and Install
3512C Engine Engine Oil Pump - Remove and Install
326F and 330F Excavator Machine Systems Relief Valve (Pilot)
C4.4 Marine Generator Set Magnetic Pickup
C4.4 Marine Generator Set Engine Oil Pan Drain Valve
C175-16 Petroleum Engines Air Shutoff
C8.7 and C12.9 Marine Engines Electronic Service Tool Does Not Communicate
WS063, WSF063 and WSP063 Well Stimulation Pumps Crosshead - Remove and Install
WS063, WSF063 and WSP063 Well Stimulation Pumps Crankshaft (Pump) - Remove and Install
3512C Marine Auxiliary Generator Set Engines with Dynamic Gas Blending Engine Monitoring System
3512C Marine Auxiliary Generator Set Engines with Dynamic Gas Blending Fuel Pressure - Gas System
3512C Engine Engine Oil Pan - Assemble
C175-16 Petroleum Engine Component Location
C175-16 Petroleum Engine Configuration Parameters
C175-16 Petroleum Engine Diagnostic Trouble Codes