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| Home / Car Engines / Nissan Engines / Nissan CA18ET |
Nissan CA18ET Troubleshooting
| Engine starts hard or won't start |
No fuel in fuel tank - Add gasoline.
Low-quality gasoline - Change fuel.
Dirty fuel lines - Inspect and clean.
Spark plug wiring connection is damaged - Check spark plug wiring connection, repair or change.
Spark plug is damaged - Spark plug need to be replaced.
Defective ignition - Inspect ignition system and change faulty parts.
Plugged fuel filter - Replace fuel filter.
Fuel lines are clogged - Clean fuel lines.
Dirty or damaged fuel pump - Check fuel pump and replace if necessary.
Dirty or faulty fuel injectors - Clean or replace fuel injectors.
Poor engine compression - Check cylinder block and replace damaged components.
| Engine runs roughly |
Ignition system is defective - Check ignition and replace faulty components.
Dirty air filter element - Clean or change air filter.
Spark plug is faulty - Change spark plug as required.
Clogged or damaged fuel pump - Service or replace fuel pump.
Valve clearance is incorrect - Adjust to proper valve clearance.
Ignition timing is improper - Ignition timing needs to be adjusted correctly.
Low idle speed set incorrectly - Correct the settings.
| Engine starts but then stops |
Defective spark plug - Replace spark plug.
Dirty or defective fuel injectors - Service or replace fuel injectors.
Defective ignition coil - Ignition coil must be replaced.
Broken or bad valve springs - New valve springs need to be installed.
Valves are stuck - Service the valves.
| Engine overheating |
Insufficient engine oil - Add oil to the engine crankcase.
Engine overloaded - Load reducing required.
Fuel injectors are clogged - Clean or change fuel injectors.
Improper ignition timing - Ignition timing needs to be adjusted correctly.
Valve setting is wrong - Set the valves properly.
Radiator fins are dirty or radiator cap is defective - Replace cap or clean radiator.
Insufficient coolant fluid - Add coolant fluid and inspect the cooling system for leaks.
Faulty thermostat - Change thermostat.
Faulty water pump - Water pump need to be replaced.
| Abnormal engine noise or knocking |
Stale fuel - Use correct gasoline.
Engine is overloaded - Reduce engine load.
Not enough engine oil - Need to add engine oil.
Incorrectly adjusted low idle speed - Adjust the low idle speed.
Dirty or damaged fuel pump - Clean or change fuel pump.
Main bearings or crankshaft failure - Crankshaft or bearings need to be replaced.
Valve clearance is wrong - Check and adjust.
Cylinder bore or piston rings are worn - Change faulty parts.
| Engine loses power |
Fuel injectors are faulty or clogged - Clean or replace fuel injectors.
Plugged air filter - Service or change air filter.
Dirty or defective fuel pump - Clean or install new fuel pump.
Defective ignition - Inspect ignition system and change failed components.
Cylinder head gasket is worn - Replace the gasket as required.
Valves are stuck or burned - Change or service valves.
Faulty cylinder block parts - Replace defective components.
Oil filter is dirty - Replace or service oil filter.
| High fuel consumption |
Air filter element is clogged - Change or service air filter.
Dirty or defective fuel injectors - Test fuel injectors and change if necessary.
Spark plug is loose or faulty - Spark plug need to be tightened or replaced.
Ignition timing is incorrect - Ignition timing needs to be adjusted correctly.
Valves are worn, stuck, or burned - Change or service valves.
Worn sleeve, piston, or rings - Replace defective components as required.
Incorrect valve clearance - Adjust valve clearance according to specifications.
Bad engine compression - Inspect cylinder block and replace worn components.
| High oil consumption |
Worn seals or gaskets - Replace worn parts to avoid leaks.
Valve guides or stems are damaged - Change the valves.
Piston rings are seized or worn - Change piston rings.
Cylinder liner or piston is scored - Inspect piston and liner, replace as required.
| Engine backfires |
Dirty fuel injectors - Service or replace fuel injectors.
Dirt in the fuel lines - Fuel lines must be clean.
Bad ignition timing - Set the ignition timing properly.
Wrong valve setting - Set the valves properly.
Plugged air filter - Clean or change air filter.
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