Honda GX35 Troubleshooting
| Engine Model: Honda GX35 |
| Engine Type: 4-cycle single-cylinder OHC air-cooled gasoline |
| Total Displacement: 2.2 cu.in (35.8 cc) |
| Rated Engine Power: 1.6 Hp (1.2 kW) at 7000 rpm |
| Carburetor Type: Diaphragm |
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| Engine will not start or hard to start |
Empty gas tank - Fill fuel up.
Incorrect fuel grade - Use quality gasoline.
Air in fuel system - Bleed fuel system.
Defective spark plug wire connection - Inspect the spark plug wire connection, replace or repair.
Faulty spark plug - Replace spark plug.
Dirty fuel filter - Replace fuel filter.
Brake pedal not pushed down - Push the brake pedal down.
Incorrect carburetor adjustment - Adjust carburetor idle mixture screw.
Low compression - Check and replace worn parts.
Incorrectly adjusted or damaged throttle cable - Replace cable or adjust correctly.
Air intake screen is blocked - Wash or clean as required.
Ignition system malfunction - Test ignition and replace failed parts.
Choke cable is stuck or faulty - Change or clean the cable.
Air filter element is plugged - Service or replace air filter.
Dirty or damaged fuel pump - Clean or change fuel pump.
| Engine starts but then stalls |
Spark plug is defective - Change spark plug.
Carburetor is faulty or clogged - Replace or service carburetor.
Faulty ignition coil - Change ignition coil as required.
Worn or loose valve springs - Valve springs need to be changed.
Valves sticking - Clean the valves.
Engine oil level is insufficient - Check oil level and add oil as required.
Engine is overloaded - Load reducing is recommended.
Cooling fins are plugged - Need to clean or wash.
Carburetor is running lean - Set the carburetor correctly.
Bad ignition timing - Set the ignition timing properly.
Incorrect valve setting - Set the valves correctly.
Low octane gasoline - Use proper fuel.
Engine is running overloaded - Reduce the load.
Insufficient engine oil - Fill up the oil to required level.
Too low idle RPM - Test and adjust.
Fuel pump is dirty or defective - Clean or change fuel pump.
Main bearings or crankshaft wear - Need to install new components.
Improper valve clearance - Adjust to proper valve clearance.
Worn cylinder bore or piston rings - Replace faulty components.
Incorrectly adjusted or dirty carburetor - Adjust the carburetor properly or clean it.
Air filter is dirty - Change or clean air filter.
Fuel pump is damaged or dirty - Test fuel pump and change if necessary.
Ignition system malfunction - Test ignition and replace failed parts.
Worn cylinder head gasket - Replace cylinder head gasket.
Valves are burned or stuck - Service or change valves.
Worn or damaged push rod - Change push rod.
Damaged cylinder block parts - Defective parts need to be replaced.
Oil filter is blocked (if equipped) - Clean or change oil filter.
| Engine using too much gasoline |
Insufficient choke opening - Inspect choke cable and adjust as required.
Carburetor main jet adjustment is incorrect - Adjust the carburetor main jet properly.
Spark plug is defective or loose - Tighten or change the spark plug.
Valves are worn, burned or stuck - Service or change valves.
Worn piston, rings, or sleeve - Replace defective parts as required.
Valve clearance is improper - Adjustment procedure required.
| Engine using too much oil |
Worn gaskets or seals - Replace defective parts.
Valve guides or stems are damaged - Valves must be replaced.
Seized or wear piston rings - Piston rings need to be replaced.
Cylinder liner or piston is scored - Inspect piston and liner, replace as required.
Breather pipe or hose is plugged - Change or service.
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