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| Home / Car Engines / Toyota Engines / Toyota 2T-GR |
Toyota 2T-GR Troubleshooting
| Engine will not start or hard to start |
No fuel in fuel tank - Add fuel.
Improper fuel grade - Use quality gasoline.
Fuel system clogged - Repair or replace.
Spark plug wire connection are damaged - Check the spark plug wire connection, repair or replace.
Spark plug is defective - Spark plug need to be replaced.
Defective ignition system - Inspect ignition system and change failed components.
Fuel filter is dirty - Fuel filter needs to be replaced.
Dirty fuel lines - Clean fuel lines.
Dirty or defective fuel pump - Service or replace fuel pump.
Carburetor is clogged - Clean the carburetor.
Bad compression - Check and change damaged parts.
| Engine runs unevenly |
Defective ignition - Inspect ignition system and change failed components.
Air filter is blocked - Service or replace air filter.
Defective spark plug - Change spark plug as required.
Clogged or damaged fuel pump - Inspect fuel pump and change as required.
Valve clearance is not correct - Adjust to proper valve clearance.
Improper ignition timing - Ignition timing needs to be adjusted correctly.
Improperly adjusted low idle speed - Adjust idling as required.
| Engine stops after starting |
Spark plug is defective - Change spark plug as required.
Carburetor is dirty or defective - Service or change carburetor.
Ignition coil is faulty - Ignition coil should be replaced.
Loose or worn valve springs - Install new valve springs.
Valves sticking - Valves need to be cleaned.
| Engine overheats |
Low engine oil level - Add oil to the engine crankcase.
Engine is running overloaded - Load reducing is recommended.
Too lean carburetor mixture - Set the carburetor properly.
Ignition timing is wrong - Ignition timing needs to be set properly.
Improper valve setting - Set the valves properly.
Faulty radiator cap or dirty radiator fins - Clean radiator or install new cap.
Insufficient coolant - Add coolant fluid and inspect the cooling system for leaks.
Defective thermostat - Thermostat need to be replaced.
Defective water pump - Change water pump as required.
| Engine knocking or noise |
Stale or low octane fuel - Change gasoline.
Engine is overloaded - Load reducing required.
Low engine oil level - Fill up the oil to required level.
Low idle speed set incorrectly - Adjust idle speed.
Fuel pump is clogged or faulty - Service or change fuel pump.
Main bearings or crankshaft wear - Repair or replace defective parts.
Valve clearance is incorrect - Adjustment procedure required.
Worn cylinder bore or piston rings - Change defective components.
| Engine power loss |
Clogged or improperly adjusted carburetor - Adjust the carburetor properly or clean it.
Air filter element is plugged - Service or change air filter.
Fuel pump is dirty or defective - Inspect fuel pump and change as required.
Defective ignition - Test ignition and replace failed parts.
Cylinder head gasket is defective - Cylinder-head gasket replacement required.
Valves are burned or stuck - Service or replace valves.
Cylinder block components are faulty - Replace defective parts as required.
Dirty oil filter element - Replace or clean oil filter.
| Engine using too much gasoline |
Air filter element is clogged - Service or change air filter.
Incorrect adjustment of carburetor main jet - Adjust the carburetor main jet correctly.
Faulty or loose spark plug - Replace or tighten spark plug.
Bad ignition timing - Set the ignition timing properly.
Valves are stuck, worn, or burned - Clean or change valves.
Piston, sleeve, or rings are damaged - Replace defective components.
Valve clearance is improper - Adjust to proper valve clearance.
Poor engine compression - Check cylinder block and replace damaged components.
| Excessive oil consumption |
Gaskets or seals are excessively worn - Replace defective parts.
Valve stems or guides are damaged - Replace the valves.
Piston rings are seized or worn - Replace piston rings.
Piston or cylinder liner is worn - Check piston and liner, install new parts as required.
| Engine backfires |
Too lean carburetor mixture - Make the correct settings.
Fuel lines clogging - Clean fuel lines.
Ignition timing is wrong - Ignition timing needs to be set properly.
Improper valve setting - Set the valves properly.
Plugged air filter - Service or change air filter.
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