Honda GXV690 Troubleshooting
| Engine Model: Honda GXV690 |
| Engine Type: 4-cycle V-twin cylinder OHV air-cooled gasoline |
| Total Displacement: 41.9 cu.in (688 cc) |
| Rated Engine Power: 22.5 Hp (16.5 kW) at 3600 rpm |
| Carburetor Type: Two-barrels with butterfly valve |
____________________________________________________________________________________
| Engine will not start or difficult to start |
Gas tank is empty - Fill fuel up.
Incorrect fuel grade - Use correct gasoline grade.
Air in fuel system - Bleed fuel system.
Spark plug wiring connection is damaged - Check spark plug wiring connection, repair or change.
Damaged spark plug - Change spark plug.
Plugged fuel filter - Install new filter.
Faulty safety switch - Change damaged switch.
Carburetor malfunction - Check and repair as required.
Low cylinder compression - Check cylinder block and replace worn parts.
Worn or unadjusted choke cable - Change cable or adjust correctly.
Plugged cooling fins - Need to clean or wash.
Ignition system is defective - Inspect ignition system and change failed components.
Choke cable is faulty or stuck - Clean or replace the cable.
Air filter element is clogged - Change or clean air filter.
Dirty or defective fuel pump - Clean or change fuel pump.
| Engine stalls after starting |
Faulty spark plug - Change spark plug.
Carburetor is clogged or defective - Carburetor needs to be replaced or cleaned.
Damaged ignition coil - Change ignition coil as required.
Valve springs are weak or broken - Replace valve springs.
Valves sticking - Valves must be cleaned.
Engine oil level is insufficient - Need to add engine oil.
Engine is under excessive load - Reduce load.
Air intake grill is clogged - Need to clean or wash.
Carburetor fuel mixture is too lean - Set the carburetor correctly.
Bad ignition timing - Adjust ignition timing as required.
Valve setting is improper - Adjust valves as required.
Stale or low octane fuel - Change fuel.
Excessive engine load - Reduce the load.
Engine oil insufficient - Need to add engine oil.
Incorrectly set low idle speed - Test and adjust.
Dirty or faulty fuel pump - Check fuel pump and replace if necessary.
Crankshaft or main bearings wear - Need to install new components.
Valve clearance is not correct - Adjust valve clearance according to specifications.
Worn piston rings or cylinder bore - Replace faulty parts.
Carburetor is improperly adjusted or dirty - Adjust the carburetor properly or clean it.
Plugged air filter - Replace or clean air filter.
Fuel pump is dirty or defective - Clean or replace fuel pump.
Ignition system failure - Inspect ignition system and change failed components.
Damaged cylinder-head gasket - Replace the gasket as required.
Valves are stuck or burned - Clean or change valves.
Bent or worn push rod - Push rod needs to be changed.
Cylinder block components are damaged - Replace defective parts.
Clogged oil filter (if equipped) - Change or service oil filter.
| Excessive fuel consumption |
Choke did not open fully - Change or adjust choke cable.
Incorrect carburetor main jet adjustment - Adjust the carburetor main jet correctly.
Spark plug is loose or faulty - Spark plug need to be replaced or tightened.
Valves are stuck, worn, or burned - Service or replace valves.
Sleeve, rings, or piston are damaged - Replace defective parts.
Improper valve clearance - Adjust valve clearance.
| Excessive engine oil consumption |
Defective seals or gaskets - Change worn parts according to specifications.
Worn valve guides and valve stems - Valves must be replaced.
Piston rings are stuck or worn - Piston rings need to be replaced.
Cylinder liner or piston is scuffed - Check liner and piston, install new components as required.
Blocked breather pipe or hose - Clean or change.
____________________________________________________________________________________
| Small Engines Technical Specifications |
| Car Engines Technical Specifications |
| Outboard Engines Technical Specifications |
| Industrial Engines Technical Specifications |
