________________________________________________________________________________________
| Home / Car Engines / Toyota Engines / Toyota 2T |
Toyota 2T Troubleshooting
| Engine will not start or hard to start |
Empty gas tank - Add fuel.
Low-quality gasoline - Use quality fuel.
Dirt and debris in fuel system - Remove debris and dirt.
Disconnected or loose spark plug wire - Inspect the spark plug wire connection, replace or repair.
Defective spark plug - Spark plug need to be replaced.
Ignition failure - Inspect ignition system and change faulty parts.
Fuel filter is clogged - Change fuel filter.
Restricted fuel lines - Clean fuel system lines.
Fuel pump is damaged or dirty - Test fuel pump and replace if necessary.
Problems with carburetor adjustment - Adjust as required.
Bad compression - Check and change damaged parts.
| Engine runs unevenly |
Ignition system malfunction - Inspect ignition system and change faulty parts.
Dirty air filter element - Replace or clean filter.
Damaged spark plug - Spark plug need to be replaced.
Dirty or defective fuel pump - Check fuel pump and replace if necessary.
Valve clearance is not correct - Adjust to proper valve clearance.
Ignition timing is improper - Set the ignition timing properly.
Low idle speed setting is not correct - Adjust as required.
| Engine starts but stalls suddenly |
Damaged spark plug - Change spark plug.
Carburetor is clogged or defective - Clean or replace carburetor.
Ignition coil is not working - Ignition coil must be replaced.
Damaged or weak valve springs - Change valve springs.
Valves sticking - Service the valves.
| Engine overheats |
Insufficient engine oil - Check and refill engine oil.
Engine overloaded - Reduce load.
Too lean carburetor mixture - Use proper settings.
Bad ignition timing - Set the ignition timing correctly.
Valve setting is incorrect - Valves needs to be adjusted properly.
Dirty radiator fins or defective radiator cap - Install new cap or clean radiator.
Insufficient coolant fluid - Fill radiator to proper level and check components for faults.
Thermostat is defective - Change thermostat as required.
Water pump malfunction - Water pump need to be replaced.
| Abnormal engine noise or knocking |
Low octane gasoline - Change fuel.
Engine is running overloaded - Load reducing required.
Engine oil insufficient - Check and refill engine oil.
Low idle speed setting is incorrect - Correct the settings.
Fuel pump is damaged or dirty - Clean or replace fuel pump.
Crankshaft or main bearings failure - Change or repair worn components.
Valve clearance is not correct - Need to adjust valve clearance.
Cylinder bore or piston rings are damaged - Replace faulty components.
| Low engine power |
Improperly or clogged carburetor - Service or properly adjust carburetor.
Clogged air filter - Replace or clean air filter.
Clogged or damaged fuel pump - Clean or install new fuel pump.
Ignition system is defective - Check ignition and replace faulty components.
Defective cylinder head gasket - Replace the gasket as required.
Burned or stuck valves - Change or clean valves.
Faulty cylinder block components - Replace defective components as required.
Clogged oil filter - Replace or service oil filter.
| High fuel consumption |
Air filter is dirty - Replace or service air filter.
Carburetor main jet adjustment is improper - Adjust it properly.
Spark plug is loose or defective - Spark plug need to be tightened or replaced.
Wrong ignition timing - Set the ignition timing properly.
Valves are stuck, burned, or worn - Replace or clean valves.
Sleeve, rings, or piston are damaged - Replace defective components.
Valve clearance is not correct - Adjust to proper valve clearance.
Low cylinder compression - Check cylinder block and replace worn parts.
| Engine consuming too much oil |
Worn seals or gaskets - To repair leaks, replace worn parts.
Worn valve guides and valve stems - Need to replace the valves.
Stuck or worn piston rings - Have piston rings replaced.
Worn cylinder liner or piston - Inspect piston and liner, replace as required.
| Engine backfires |
Too lean carburetor mixture - Adjust carburetor properly.
Fuel lines clogging - Clean fuel system lines.
Improper ignition timing - Set the ignition timing correctly.
Incorrect valve setting - Set the valves properly.
Air filter element is plugged - Clean or change air filter.
________________________________________________________________________________________
________________________________________________________________________________________
| Engines Technical Specifications |