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| Home / Car Engines / Nissan Engines / Nissan A13 |
Nissan A13 Troubleshooting
| Engine will not start or starts up hard |
Empty gas tank - Fill fuel up.
Incorrect fuel grade - Use correct gasoline grade.
Air in the fuel system - Air bleeding.
Spark plug wiring connection is defective - Check spark plug wiring connection, repair or change.
Spark plug is faulty - Change spark plug as required.
Ignition system is defective - Test ignition and replace failed parts.
Fuel filter is plugged - Fuel filter needs changing.
Fuel lines clogging - Clean fuel system lines.
Fuel pump is dirty or defective - Check fuel pump and replace if necessary.
Carburetor is not adjusted - Check carburetor float adjustment.
Poor engine compression - Check cylinder block and replace damaged components.
| Engine runs irregularly |
Ignition system failure - Inspect ignition system and change faulty parts.
Air filter is blocked - Clean or replace.
Faulty spark plug - Spark plug need to be replaced.
Clogged or defective fuel pump - Test fuel pump and change if necessary.
Improper valve clearance - Check and adjust.
Incorrect ignition timing - Ignition timing needs to be adjusted correctly.
Improperly adjusted low idle speed - Adjust idling as required.
| Engine starts but then stops |
Defective spark plug - Replace spark plug.
Dirty or faulty carburetor - Clean or install new carburetor.
Ignition coil is not working - Install a new ignition coil.
Weak or damaged valve springs - Replace valve springs.
Valves sticking - Service the valves.
| Engine overheats |
Lack of engine oil - Fill up the engine oil.
Excessive engine load - Reduce load.
Carburetor is running lean - Adjust carburetor properly.
Improper ignition timing - Adjust ignition timing correctly.
Valve setting is incorrect - Set the valves correctly.
Clogged radiator core or damaged radiator cap - Clean radiator or change cap.
Engine coolant is insufficient - Top up coolant fluid and check system for leaks.
Faulty thermostat - Install new thermostat.
Damaged water pump - Water pump need to be replaced.
| Engine noises or knocks |
Stale or low octane fuel - Change gasoline.
Engine is running overloaded - Reduce load.
Not enough engine oil - Need to add engine oil.
Incorrectly adjusted low idle speed - Correct the settings.
Dirty or damaged fuel pump - Clean or replace fuel pump.
Main bearings or crankshaft failure - Repair or replace defective parts.
Valve clearance is not correct - Adjust valve clearance according to specifications.
Worn cylinder bore or piston rings - Change faulty components.
| Low engine power |
Improperly or clogged carburetor - Carburetor needs to be adjusted correctly or cleaned.
Air filter element is plugged - Replace or clean air filter.
Clogged or damaged fuel pump - Check fuel pump and replace if necessary.
Ignition system is defective - Check ignition and replace faulty components.
Blown cylinder head gasket - Change cylinder head gasket.
Stuck or burned valves - Replace or clean valves.
Faulty cylinder block parts - Change defective components.
Oil filter is dirty - Replace or clean oil filter.
| Engine uses too much fuel |
Air filter is blocked - Clean or replace air filter.
Carburetor main jet is incorrectly adjusted - Adjust main jet as required.
Spark plug is loose or faulty - Tighten or replace spark plug.
Bad ignition timing - Ignition timing needs to be adjusted correctly.
Burned, worn, or stuck valves - Replace or clean valves.
Worn sleeve, rings, or piston - Change faulty parts.
Excessive valve clearance - Need to adjust valve clearance.
Low cylinder compression - Check cylinder block and replace worn parts.
| Excessive oil consumption |
Gaskets or seals can be faulty - Replace worn parts to avoid leaks.
Worn valve stems and valve guides - Valves replacement required.
Stuck or worn piston rings - Replace piston rings.
Piston or cylinder liner is scuffed - Check piston and liner, install new parts as required.
| Engine backfires |
Carburetor fuel mixture is too lean - Adjust carburetor correctly.
Restricted fuel lines - Fuel lines must be clean.
Incorrect ignition timing - Adjust ignition timing as required.
Valve setting is wrong - Valves needs to be adjusted properly.
Air filter is dirty - Replace or clean air filter.
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