|
STATE
|
Probable cause
|
Elimination
|
|||
|
Difficult start (when starting the engine cold)
|
Ignition system malfunction
|
The fuse has blown.
|
Replace the fuse.
|
||
|
The spark plug burned out.
|
Clean or replace the spark plug.
|
||||
|
Current leakage in high voltage cable.
|
Replace the cable.
|
||||
|
Poor connection of high voltage cable or live conductors.
|
Replace the cable or wires.
|
||||
|
The ignition timing angle setting is incorrect.
|
Adjust the ignition timing angle.
|
||||
|
The ignition coil is faulty.
|
Replace the ignition coil.
|
||||
|
Fuel system malfunction
|
The fuel supply from the fuel tank is blocked.
|
Supply fuel.
|
|||
|
The fuel filter is dirty or clogged.
|
Replace the fuel pump assembly.
|
||||
|
Fuel line blockage.
|
Clean the fuel line.
|
||||
|
Fuel pump malfunction.
|
Replace the fuel pump assembly.
|
||||
|
Fuel injector malfunction.
|
Replace the injector.
|
||||
|
Foreign substance in the fuel tank.
|
Clean the fuel tank and replace the fuel pump assembly.
|
||||
|
Compression pressure drop
|
Weak spark plug tightening.
|
Tighten to the specified torque.
|
|||
|
The cylinder head gasket is cracked.
|
Replace the gasket.
|
||||
|
Incorrect valve clearance.
|
Adjust the gap.
|
||||
|
Valve clearance leak.
|
Repair the valve.
|
||||
|
Valve stem failure.
|
Replace the valve or valve guide.
|
||||
|
Insufficient elasticity or damage to the valve spring.
|
Replace the valve spring.
|
||||
|
Significant disruption in the operation of pistons and cylinders.
|
Replace the piston ring.
|
||||
|
Severe wear of pistons, rings or cylinders.
|
Replace the ring or piston with the bore or replace the cylinder.
|
||||
|
Other
|
Open drive belt of the gas distribution mechanism.
|
Replace the belt.
|
|||
|
Positive crankcase ventilation valve malfunction.
|
Check and replace the positive crankcase ventilation valve if necessary.
|
||||
|
Vacuum hose disconnected, damaged or leaking.
|
Establish a secure hose connection or replace it.
|
||||
|
Leak in the intake system.
|
Replace the intake system.
|
||||
|
STATE
|
Probable cause
|
Elimination
|
|||
|
Lack of engine power
|
Compression pressure drop
|
||||
|
Ignition system malfunction
|
The ignition timing angle setting is incorrect.
|
Adjust the ignition timing angle.
|
|||
|
The spark plug burned out.
|
Adjust or replace the spark plug.
|
||||
|
Current leakage or poor connection in high voltage cable.
|
Connect the cable correctly or replace it.
|
||||
|
Fuel system malfunction
|
Fuel line blockage.
|
Clean the pipe.
|
|||
|
Clogged or dirty fuel filter.
|
Replace the fuel pump assembly.
|
||||
|
Other
|
Clogged exhaust system.
|
Check and repair the system.
|
|||
|
Clogged or dirty air filter element.
|
Clean or replace the air filter element.
|
||||
|
Intake manifold gasket leak.
|
Replace the gasket.
|
||||
|
Weak brake performance.
|
Repair or replace brake mechanisms.
|
||||
|
Clutch slippage.
|
Adjust or replace the clutch.
|
||||
|
Unstable idle speed.
|
Compression pressure drop
|
||||
|
Fuel system malfunction
|
Fuel line blockage.
|
Clean the pipe.
|
|||
|
Clogged or dirty fuel filter.
|
Replace the fuel pump assembly.
|
||||
|
Ignition system malfunction
|
Spark plug failure.
|
Adjust or replace the spark plug.
|
|||
|
Wear of the direct ignition system terminals or carbon deposits in the direct ignition system.
|
Replace or clean the direct ignition system.
|
||||
|
Inaccurate setting of ignition timing.
|
Adjust the ignition timing angle.
|
||||
|
Ignition coil failure.
|
Replace the ignition coil.
|
||||
|
Other
|
Clogged or dirty air filter element.
|
Clean or replace the air filter element.
|
|||
|
Intake manifold gasket leak.
|
Replace the gasket.
|
||||
|
Positive crankcase ventilation valve malfunction.
|
Check it or replace it if necessary.
|
||||
|
Poor connection or damage or leakage of the vacuum hose.
|
Establish a secure hose connection or replace it.
|
||||
|
STATE
|
Probable cause
|
Elimination
|
|||
|
"Slowness" of the engine (the engine does not respond immediately to pressing the gas pedal. This is especially noticeable when using cruise control or starting).
|
Compression pressure drop
|
||||
|
Ignition system malfunction
|
Inaccurate setting of ignition timing.
|
Adjust the ignition timing angle.
|
|||
|
The spark plug is faulty or the spark gap needs to be adjusted.
|
Replace the spark plug.
|
||||
|
Current leakage or poor connection in high voltage cable.
|
Connect the cable correctly or replace it.
|
||||
|
Other
|
Air purification system malfunction.
|
Clean or replace the air purification system.
|
|||
|
Intake manifold gasket leak.
|
Replace the gasket.
|
||||
|
Uneven engine running (engine power changes at a fixed speed and speed changes without changing the pressure on the gas pedal).
|
Compression pressure drop
|
||||
|
Fuel system malfunction
|
Fuel line blockage.
|
Clean the pipe.
|
|||
|
Clogged or dirty fuel filter.
|
Replace the fuel pump assembly.
|
||||
|
Ignition system malfunction
|
Spark plug failure.
|
Adjust or replace the spark plug.
|
|||
|
Current leakage or poor connection in high voltage cable.
|
Connect the cable correctly or replace it.
|
||||
|
Disconnection or damage to the direct ignition system.
|
Replace DIS system.
|
||||
|
Inaccurate setting of ignition timing.
|
Adjust the ignition timing angle.
|
||||
|
Other
|
Intake manifold gasket leak.
|
Clean or replace the gasket.
|
|||
|
The vacuum hose is leaking.
|
Establish a secure hose connection or replace it.
|
||||
|
Increased detonation (within the throttle opening range, a metallic pop with a disturbed flash is heard).
|
Engine overheating
|
See "Overheating" on this page.
|
See "Overheating" on this page.
|
||
|
Ignition system malfunction
|
Spark plug failure.
|
Replace the spark plug.
|
|||
|
Inaccurate setting of ignition timing.
|
Adjust the ignition timing angle.
|
||||
|
Current leakage or poor connection in high voltage cable.
|
Connect the cable correctly or replace it.
|
||||
|
Fuel system malfunction
|
The fuel filter and fuel line are clogged or dirty.
|
Clean or replace the fuel pump assembly and fuel line.
|
|||
|
Other
|
Intake manifold gasket leak.
|
Replace the gasket.
|
|||
|
Large carbon deposits due to combustion problems.
|
Remove carbon deposits.
|
||||
|
STATE
|
Probable cause
|
Elimination
|
|||
|
Overheat
|
Cooling system malfunction
|
Lack of coolant.
|
Add coolant.
|
||
|
Thermostat malfunction.
|
Replace the thermostat.
|
||||
|
Cooling system fan malfunction.
|
Check or replace the cooling fan.
|
||||
|
The coolant pump is not working properly.
|
Replace the pump.
|
||||
|
The radiator is clogged or has a leak.
|
Clean, repair or replace the radiator.
|
||||
|
Lubrication system malfunction
|
Low quality motor oil.
|
Replace engine oil with the specified grade.
|
|||
|
The oil filter or coarse filter is clogged.
|
Clean or replace the oil filter or coarse filter.
|
||||
|
Lack of engine oil.
|
Add oil.
|
||||
|
Decreased performance of the oil pump.
|
Replace or repair the pump.
|
||||
|
Other
|
Oil leak.
|
Repair.
|
|||
|
The cylinder head gasket is damaged.
|
Replace the gasket.
|
||||
|
STATE
|
Probable cause
|
Elimination
|
|||
|
Insufficient fuel consumption.
|
Compression pressure drop
|
||||
|
Fuel system malfunction
|
Leak in fuel tank or fuel line.
|
Repair or replace the fuel tank or fuel line.
|
|||
|
Ignition system malfunction
|
The ignition timing angle setting is incorrect.
|
Adjust the ignition timing angle.
|
|||
|
The spark plug is malfunctioning (large deposits, gap is broken, electrode is burnt out).
|
Replace the spark plug.
|
||||
|
Current leakage or poor connection in high voltage cable.
|
Connect the cable correctly or replace it.
|
||||
|
Cooling system malfunction
|
Thermostat malfunction.
|
Replace the thermostat.
|
|||
|
Other
|
Incorrect valve installation.
|
Repair or replace the valve.
|
|||
|
Clutch slippage.
|
Repair or replace the clutch.
|
||||
|
Low tire pressure.
|
Bring the tire pressure to normal.
|
||||
|
STATE
|
Probable cause
|
Elimination
|
|||
|
Increased engine oil consumption
|
Engine oil leak
|
The oil drain plug has come loose.
|
Tighten the plug.
|
||
|
The oil pan bolts came loose.
|
Tighten the bolts.
|
||||
|
The oil filter is not secured properly.
|
Tighten the filter.
|
||||
|
Loosening of oil line pressure switch.
|
Tighten the switch.
|
||||
|
Leakage in the front camshaft oil seal.
|
Replace the oil seal.
|
||||
|
Leakage in the front crankshaft oil seal.
|
Replace the oil seal.
|
||||
|
Leaking cylinder head cover gasket.
|
Replace the gasket.
|
||||
|
Damage to the cylinder head gasket.
|
Replace the gasket.
|
||||
|
Mixing with oil in the combustion chamber.
|
The piston ring is stuck.
|
Remove carbon deposits and replace the ring.
|
|||
|
Piston or cylinder wear.
|
Replace piston or cylinder.
|
||||
|
Wear of piston ring or ring groove.
|
Replace piston or ring.
|
||||
|
The position of the cutting part of the piston ring is damaged.
|
Adjust the position.
|
||||
|
Abrasion or damage to the valve system.
|
Replace the valve system.
|
||||
|
Low oil pressure
|
Lubrication system malfunction
|
Incorrect oil viscosity.
|
Replace with the specified variety.
|
||
|
Loosening of oil line pressure switch.
|
Tighten the switch.
|
||||
|
Lack of engine oil.
|
Add oil.
|
||||
|
Clogged oil filter.
|
Clean the filter.
|
||||
|
Decreased performance of the oil pump.
|
Replace the pump.
|
||||
|
Wear or damage to the oil pump relief valve.
|
Replace the valve.
|
||||
|
STATE
|
Probable cause
|
Elimination
|
|||
|
Engine noise
|
Valve noise
|
Incorrect valve clearance.
|
Adjust the valve clearance.
|
||
|
Valve stem or guide wear.
|
Replace the valve stem or guide.
|
||||
|
The valve spring is weak.
|
Replace the spring.
|
||||
|
Noise from piston, ring, cylinder
|
Wear of piston, ring or cylinder.
|
Cylinder boring or replacement of piston, ring or cylinder.
|
|||
|
Noise from connecting rod
|
Connecting rod bearing wear.
|
Replace the bearing.
|
|||
|
The connecting rod nut came loose.
|
Tighten to the specified torque.
|
||||
|
Crankshaft noise
|
Main bearing wear.
|
Replace the bearing.
|
|||
|
Crankshaft journal wear.
|
Grind or replace the crankshaft journal.
|
||||
|
The bearing cover bolt came loose.
|
Tighten to the specified torque.
|
||||
|
Increased clearance in the crankshaft thrust bearing.
|
Adjust or replace.
|
||||
|
Low oil pressure.
|
See "Low Oil Pressure" in this section.
|
||||