Kohler ECV870 Troubleshooting
| Engine Model: Kohler Command Pro ECV870 EFI |
| Engine Type: 4-cycle V-Twin cylinder vertical shaft air-cooled gasoline |
| Total Displacement: 50.3 cu.in (824 cc) |
| Rated Engine Power: 31 Hp (23.1 kW) at 3600 rpm |
| Fuel System Type: Electronic fuel injection (EFI) |
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| Engine doesn't start or starts hard |
No gasoline in tank - Fill gasoline up.
Low-quality gasoline - Change gasoline.
There is air in the fuel system - Bleed the system.
Spark plug wiring connection is defective - Check the spark plug wire connection, repair or replace.
Damaged spark plug - Replace spark plug.
Plugged fuel filter - Change fuel filter.
Faulty safety switch - Change damaged switch.
Crankshaft position sensor is loose or defective - Change as required.
Throttle position sensor defective or incorrectly set - Replace or adjust throttle position sensor.
Low system voltage - Voltage regulator is defective, change it.
Fuel injectors are damaged or dirty - Service or change fuel injectors.
Restricted fuel lines - Service fuel lines.
Bad compression - Check and change damaged parts.
Throttle cable is damaged or adjusted incorrectly - Adjust correctly or replace the cable.
Air intake screen is plugged - Need to clean or wash.
Ignition system malfunction - Inspect ignition system and change failed components.
Choke cable is stuck or defective - Clean or change the cable.
Air filter element is plugged - Change or service air filter.
Dirty or faulty fuel pump - Service or change fuel pump.
Fuel injectors are faulty or clogged - Inspect fuel injectors and change as required.
Dirt in the fuel lines - Fuel lines must be clean.
Throttle position sensor malfunction or improper setting - Adjust or replace throttle position sensor.
| Engine starts but stalls immediately |
Spark plug is defective - Install new spark plug.
Faulty ignition coil - Ignition coil should be replaced.
Loose or broken valve springs - Change valve springs.
Valves sticking - Valves must be cleaned.
Plugged fuel filter - Fuel filter needs to be replaced.
Air filter is dirty - Service or replace air filter.
Clogged fuel lines - Fuel lines must be clean.
Clogged or damaged fuel injectors - Service or replace fuel injectors.
Improper governor setting - Governor needs to be adjusted correctly.
Lack of engine oil - Need to add engine oil.
Engine is overloaded - Reduce engine load.
Plugged cooling fins - Need to clean or wash.
Wrong ignition timing - Ignition timing needs to be adjusted correctly.
Valve setting is incorrect - Adjust valves correctly.
Stale fuel - Change gasoline.
Excessive engine load - Reduce the load.
Engine oil level low - Fill up the engine oil.
Incorrect low idle setting - Correct the settings.
Fuel pump is defective or dirty - Test fuel pump and change if necessary.
Worn crankshaft or main bearings - Repair or replace defective parts.
Improper valve clearance - Adjust to proper valve clearance.
Cylinder bore or piston rings are damaged - Change faulty parts.
Air filter element is plugged - Replace or service air filter.
Fuel pump is clogged or faulty - Check fuel pump and replace if necessary.
Dirt in the fuel lines Fuel lines must be clean.
Improper governor adjustment - Set governor properly.
One fuel injector failure - Check fuel injector and change if required.
Ignition failure - Inspect ignition system and change failed components.
Cylinder head gasket is damaged - Change cylinder head gasket.
Valves are stuck or burned - Clean or change valves.
Damaged or worn push rod - Push rod should be replaced.
Damaged cylinder block components - Replace defective components.
Oil filter element is plugged - Clean or change oil filter.
| Engine uses too much fuel |
Choke did not open fully - Change or adjust choke cable.
Clogged or defective fuel injectors - Service or change fuel injectors.
Spark plug is defective or loose - Spark plug need to be replaced or tightened.
Valves are worn, stuck, or burned - Clean or replace valves.
Worn sleeve, rings, or piston - Replace faulty parts as required.
Valve clearance is improper - Adjustment procedure required.
| Excessive engine oil consumption |
Gaskets or seals may be damaged - Replace worn parts to avoid leaks.
Damaged valve guides or valve stems - Valves must be replaced.
Piston rings are defective or worn - Piston rings replacement required.
Piston or cylinder liner is damaged - Check piston and liner, install new parts as required.
Breather pipe or hose is blocked - Replace or service.
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