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Honda GSV190 Troubleshooting

Engine Model: Honda GSV190
Engine Type: 4-cycle OHC single cylinder gasoline engine
Total Displacement: 11.4 (187 cc)
Rated Engine Power: 6.5 Hp (4.8 kW) at 3600 rpm
Carburetor Type: Horizontal, butterfly valve


Engine hard to start or doesn't start

Gas tank is empty - Add gasoline.
Wrong fuel grade - Change gasoline.
Dirty fuel system - Check and clean.
Damaged spark plug wiring connection - Check spark plug wiring connection, repair or change.
Spark plug is damaged - Spark plug need to be replaced.
Fuel filter is plugged - Replace fuel filter.
Faulty safety switch - Change damaged switch.
Carburetor incorrectly set - Set carb correctly.
Low compression - Check and replace worn parts.
Not adjusted or damaged throttle cable - Change cable or adjust correctly.

Engine runs irregularly

Air intake screen is plugged - Wash or clean as required.
Ignition failure - Inspect ignition system and change faulty parts.
Choke cable is defective or stuck - Replace or service the cable.
Plugged air filter - Change or service air filter.
Fuel pump is faulty or clogged - Test fuel pump and change if necessary.

Engine stops after starting

Spark plug is faulty - Change spark plug.
Carburetor is faulty or clogged - Clean or install new carburetor.
Ignition coil is not working - Replace ignition coil as necessary.
Broken or bad valve springs - Install new valve springs.
Valves sticking - Valves need to be cleaned.

Engine overheats

Insufficient engine oil - Fill the crankcase with engine oil.
Engine is overloaded - Load reducing is recommended.
Cooling fins are plugged - Need to clean or wash.
Carburetor mixture is too lean - Adjust carburetor properly.
Bad ignition timing - Set the ignition timing properly.
Wrong valve setting - Set the valves correctly.

Engine knocks or noises

Low octane fuel - Use proper gasoline.
Engine is overloaded - Load reducing required.
Lack of engine oil - Need to add engine oil.
Low idle speed adjustment is incorrect - Adjust idling as required.
Dirty or damaged fuel pump - Test fuel pump and replace if necessary.
Main bearings or crankshaft are worn out - Have bearings or crankshaft replaced.
Valve clearance is improper - Adjustment procedure required.
Cylinder bore or piston rings are damaged - Change defective components.

Engine loses power

Dirty or incorrectly adjusted carburetor - Service or correctly adjust carburetor.
Clogged air filter - Service or change air filter.
Dirty or faulty fuel pump - Check fuel pump and change if required.
Ignition system malfunction - Inspect ignition system and change failed components.
Damaged cylinder-head gasket - Replace the gasket as required.
Valves are burned or stuck - Clean or change valves.
Push rod is bent or worn - Push rod needs to be changed.
Cylinder block components are damaged - Replace defective parts.
Dirty oil filter element (if equipped) - Replace or clean oil filter.

Engine uses too much fuel

Insufficient choke opening - Inspect choke cable and adjust as required.
Carburetor main jet is improperly adjusted - Adjust it properly.
Spark plug is defective or loose - Re-tighten or change the spark plug.
Valves are stuck, worn, or burned - Replace or clean valves.
Worn sleeve, rings, or piston - Replace defective components.
Valve clearance is improper - Check and adjust.

High engine oil consumption

Worn seals or gaskets - Replace worn parts to avoid leaks.
Damaged valve guides or valve stems - Need to replace the valves.
Worn or broken piston rings - Install new piston rings.
Piston or cylinder liner is worn - Inspect liner and piston, fit new parts as necessary.
Blocked breather hose or pipe - Service or change.