Kohler ECV730 Troubleshooting
| Engine Model: Kohler Command Pro ECV730 EFI |
| Engine Type: 4-cycle V-Twin cylinder vertical shaft air-cooled gasoline |
| Total Displacement: 45.6 cu.in (747 cc) |
| Rated Engine Power: 23 Hp (17.2 kW) at 3600 rpm |
| Fuel System Type: Electronic fuel injection (EFI) |
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| Engine difficult to start or doesn't start |
Fuel tank is empty - Fill it up.
Improper fuel grade - Use correct fuel grade.
Water or air in fuel system - Remove air or water from system.
Spark plug wiring connection is damaged - Check spark plug wiring connection, repair or change.
Faulty spark plug - Change spark plug.
Fuel filter is dirty - Change fuel filter.
Faulty safety switch - Change damaged switch.
Damaged or loose Crankshaft position sensor - Change crankshaft position sensor.
Improper setting or defective throttle position sensor - Replace or adjust throttle position sensor.
Lack of system voltage - Defective voltage regulator, change it.
Dirty or defective fuel injectors - Clean or install new fuel injectors.
Dirt in the fuel lines - Service fuel lines.
Low engine compression - Inspect cylinder block and change defective components.
Throttle cable is adjusted improperly or worn - Change cable or adjust properly.
Cooling fins are plugged - Wash or clean as required.
Defective ignition - Test ignition and replace failed parts.
Defective or stuck choke cable - Change or clean the cable.
Air filter is dirty - Service or change air filter.
Fuel pump is clogged or faulty - Test fuel pump and change if necessary.
Fuel injectors are faulty or clogged - Clean or replace fuel injectors.
Clogged fuel lines - Fuel lines need to be cleaned.
Faulty or incorrectly adjusted throttle position sensor - Adjust throttle position sensor or replace it.
| Engine starts and immediately shuts off |
Defective spark plug - Replace spark plug.
Ignition coil is faulty - Replace ignition coil as necessary.
Valve springs are broken or bad - Replace valve springs.
Valves sticking - Service the valves.
Clogged fuel filter - Install new filter.
Air filter is dirty - Service or replace air filter.
Dirty fuel lines - Service fuel lines.
Clogged or defective fuel injectors - Service or replace fuel injectors.
Governor setting is incorrect - Governor needs to be set properly.
Not enough engine oil - Fill up the engine oil.
Engine is running overloaded - Load reducing is recommended.
Cooling fins are clogged - Need to wash or clean.
Ignition timing is wrong - Ignition timing needs to be set properly.
Valve setting is wrong - Adjust valves as required.
| Abnormal engine noise or knocking |
Stale or low octane fuel - Use correct gasoline.
Engine overloaded - Reduce load.
Insufficient engine oil - Need to add engine oil.
Low idle speed set incorrectly - Adjust as required.
Dirty or damaged fuel pump - Clean or replace fuel pump.
Main bearings or crankshaft wear - Change defective components as required.
Valve clearance is incorrect - Check and adjust.
Cylinder bore or piston rings are damaged - Replace faulty parts.
| Engine power is insufficient |
Air filter is dirty - Clean or change air filter.
Dirty or faulty fuel pump - Test fuel pump and replace if necessary.
Restricted fuel lines - Clean fuel system lines.
Improper governor adjustment - Set governor properly.
Damaged one fuel injector - Check fuel injector and replace if necessary.
Ignition system malfunction - Check ignition system and replace faulty parts.
Blown cylinder head gasket - Install new cylinder head gasket.
Stuck or burned valves - Clean or change valves.
Damaged or worn push rod - Push rod should be replaced.
Cylinder block components are damaged - Defective components need to be replaced.
Oil filter element is clogged - Replace or clean oil filter.
| Excessive fuel consumption |
Throttle did not open fully - Replace or adjust throttle cable.
Fuel injectors are faulty or clogged - Service or replace fuel injectors.
Spark plug is loose or faulty - Spark plug need to be tightened or replaced.
Valves are worn, stuck, or burned - Change or clean valves.
Worn sleeve, piston, or rings - Replace faulty parts as required.
Valve clearance is not correct - Adjustment procedure required.
Seals or gaskets are defective - Replace defective parts.
Damaged valve stems or valve guides - Need to replace the valves.
Piston rings are defective or worn - Piston rings need to be replaced.
Damaged piston or cylinder liner - Check liner and piston, install new components as required.
Plugged breather hose or pipe - Clean or change.
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