21442526 Volvo.Penta Rubber ring

The connection of battery cables to a battery and the disconnection of battery cables from a battery may cause an explosion which may result in injury or death. The connection and the disconnection of other electrical equipment may also cause an explosion which may result in injury or death. The procedures for the connection and the disconnection of battery cables and other electrical equipment should only be performed in a nonexplosive atmosphere.
Troubleshooting can be difficult. To repair the problem, refer to the possible causes and then refer to the corrective actions that are listed. Refer to your engine's Troubleshooting module for more information.This list of problems, causes, and corrections will only give an indication of the location of a possible problem. This will also list the type of repairs that are needed.Service personnel may remember similar complaints which were corrected by a previous method of troubleshooting. A similar complaint can have a different cause.Get a good description of the problem from the operator and/or the person that operates the engine. Knowing the details of the problem can save time. This will make the repair job faster and easier.Troubleshooting Problems
Combustion Noise
Probable Cause
Low Quality of Fuel or Water in the Fuel - Refer to Testing and Adjusting, "Fuel Quality - Test". Also, refer to Operation and Maintenance Manual, "Fuel Recommendations" for fuel specifications.Incorrect Timing Position Sensor Calibration - Refer to Troubleshooting for more information.Fuel Consumption Too High
Probable Cause
Low Quality of Fuel, or Water in the Fuel - Refer to Testing and Adjusting, "Fuel Quality - Test". Refer to Operation and Maintenance Manual, "Fuel Recommendations" for fuel specifications.Fuel System Leaks - Inspect the fuel system for leaks. As needed, make repairs or replacements.Excessive Idle Time - The engine should be shut off when the engine is not active.Fuel and Combustion Noise (knock) - Refer to your engine's Troubleshooting module for more information.Incorrect Timing Position Sensor Calibration - Refer to your engine's Troubleshooting module for more information.Excessive Black Smoke
Probable Cause
Not Enough Air for Combustion - Check for a plugged air cleaner element or for blockage in the air lines. Refer to Testing And Adjusting for the procedures to check inlet manifold pressure and aftercooler core leakage.Incorrect Timing Position Sensor Calibration - Refer to Electronic Troubleshooting for more information.Too Much White Smoke
Probable Cause
Engine Misfire - Refer to Electronic Troubleshooting for more information.Incorrect Timing Position Sensor Calibration - Refer to Electronic Troubleshooting for more information.Coolant in the Combustion System - White smoke can also be caused from the following problems.
Coolant in the combustion chamber
A cracked cylinder head
A cracked cylinder liner
A faulty cylinder head gasketToo Much Blue Smoke
Probable Cause
High Engine Oil Level - Do not put too much oil in the crankcase. If the oil level in the crankcase increases during engine operation, check for fuel dilution of the engine oil. If fuel dilution is detected, check for leaks in the injector sleeves. Also check fuel injectors that may be worn or damaged.Failed Turbocharger Oil Seal - Check the inlet manifold and the aftercooler core for oil. The turbocharger should be repaired or replaced.Worn Valve Guides - See the Specifications module for the maximum permissible wear of the valve guides.Worn Piston Rings - Worn piston rings and/or cylinder walls can be the cause of blue smoke and a loss of compression. Make a visual inspection of the cylinder walls and the piston rings. If necessary, measure the cylinder walls and the piston rings. Refer to the Specifications module for the specifications of the cylinder and the piston ring.Note: High wear at low hours is normally caused by dirt. This dirt comes into the engine with the inlet air.Low Oil Pressure
Probable Cause
Low Engine Oil Level - Check the engine oil level and fill to the proper level.Oil Leaks - Check for a loose oil filter or for loose oil supply lines. Check the crankshaft seals and the gaskets for the engine.Dirty Oil Filter or Plugged Oil Cooler Core - Check the operation of the bypass valve for the filter. As required, install new oil filter elements. Clean the oil cooler core or install a new oil cooler core. Remove the dirty oil and fill the engine with clean oil to the correct level.Diesel Fuel in the Lubricating Oil - The reason may be an internal leak or worn piston rings. Make repairs, as needed. Remove any oil that contains diesel fuel. Install new oil filters and fill the engine with clean oil to the correct level.Excessive Clearance Between Rocker Arm Shaft and Rocker Arms - Check for the correct lubrication at the valve train. Install new parts, as needed.Oil Pump Suction Pipe - If the suction pipe is plugged, clean or replace the pipe. If the pipe is damaged, replace the pipe. Recheck the engine oil pressure.Oil Pump Relief Valve - Clean the valve and the housing. Install new parts, as required.Faulty Oil Pump - Replace the oil pump.Too Much Clearance Between Camshaft and Camshaft Bearings - Inspect the bearings and the camshaft for excessive wear. Replace the worn engine components.Too Much Clearance Between Crankshaft and Crankshaft Bearings - Inspect the bearings and the crankshaft journals for excessive wear. Replace the worn engine components.Too Much Bearing Clearance for Idler Gear - Inspect the bearings and the idler gear for excessive wear. Replace the worn components.Piston Cooling Jets - Inspect the piston cooling jets. If the cooling jets are plugged, clean the jets. Replace cooling jets that have been damaged.Faulty Oil Pressure Gauge - Replace the oil pressure gauge.Engine Overheating
Probable Cause
Low Coolant Level - A sufficient amount of coolant will not flow through engine's cooling system if the coolant level is too low. The lack of coolant flow will not adequately dissipate the necessary heat from the engine. Low coolant level can be due to leaks or by improperly following the filling procedure. Refer to Operation and Maintenance Manual, "Cooling System Coolant Level - Check" for information that relates to cooling system maintenance.Faulty Temperature Gauge - A temperature gauge which does not work correctly will not show