Mercury 9.9 Pro Kicker Problems
| Engine Model: Mercury Pro Kicker 9.9 |
| Engine Type: 4-stroke 2-cylinder SOHC gasoline outboard engine |
| Total Displacement: 12.8 cu.in (209 cc) |
| Rated Engine Power: 9.9 Hp (7.3 kW) at 6300 rpm |
| Fuel System: Carburetor or electronic fuel fnjection (EFI) |
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| Engine hard starting or not starting |
Gas tank is empty - Fill fuel up.
Wrong grade of gasoline - Use quality fuel.
Air in the fuel system - Air bleeding.
Spark plug wire is disconnected or loose - Check the spark plug wire connection, repair or replace.
Faulty spark plug - Install new spark plug.
Dirty fuel filter - Install new filter.
Vapor separator needle valve is bend or wear - Install new needle valve.
Dirty fuel lines - Service fuel lines.
Fuel tank air vent restricted or closed - Fuel tank air vent need to be opened or cleaned.
Faulty fuel feed pump - Install new feed pump or repair it.
Incorrectly adjusted or damaged throttle cable - Change cable or adjust correctly.
Valve clearance is improper - Adjustment procedure required.
Valve timing is improper - Adjust valve timing correctly.
Low fuel pressure - Inspect fuel system for leaks or inspect low pressure fuel pump.
Fuel injector is faulty or clogged - Clean or replace as required.
Fuel regulator malfunction - Install new fuel regulator.
ECM is faulty - Install new ECM.
| Engine starts but then shuts off |
Spark plug is defective - Change spark plug as required.
Worn or damaged vapor separator needle valve - Change vapor separator needle valve.
Damaged ignition coil - Ignition coil should be replaced.
Fuel tank air vent clogged or closed - Fuel tank air vent need to be opened or cleaned.
Faulty fuel pump - Replace or rebuild fuel pump.
Damaged choke system - Check and repair choke system.
Valve clearance is improper - Adjust valve clearance.
Wrong valve timing - Adjust valve timing correctly.
Broken or bad valve springs - Replace valve springs.
Stuck valves - Clean the valves.
Poor compression - Check and change damaged parts.
Fuel filter is plugged - Change fuel filter.
Clogged or worn fuel injector - Clean or replace if necessary.
Insufficient engine oil - Fill the crankcase with engine oil.
Damaged oil pump - Change oil pump as required.
Dirty water intake screen - Need to clean or wash.
Thermostat is faulty - Replace thermostat.
Water pump is defective - Install new water pump.
Ignition system problems - Inspect ignition system and change faulty parts.
Clogged or defective fuel pump - Inspect fuel pump and change as required.
Worn or damaged vapor separator needle valve - Replace needle valve.
Restricted fuel lines - Fuel lines need to be cleaned.
Fuel tank air vent restricted or closed - Fuel tank air vent need to be opened or cleaned.
Clogged fuel filter - Install new filter.
Intake manifold is air leaking - Replace intake manifold gasket.
Water intake is clogged - Need to wash or clean.
Throttle link and throttle valve are wear or damaged - Change faulty components.
Damaged or clogged fuel injector - Clean or install new injector.
Excessive engine load - Reduce load.
Fuel pump or fuel injector is dirty - Clean or replace if necessary.
Improper ignition timing - Set the ignition timing correctly.
Faulty thermostat - Change thermostat as required.
Damaged water pump - Replace water pump.
Improper propeller diameter or pitch - Install correct propeller.
Damaged or improper size of propeller - Replace propeller.
Outboard engine is positioned too low or too high - Mount the motor as required.
Engine oil level is insufficient - Check and refill engine oil.
Defective oil pump - Change oil pump as required.
Dirty water intake screen - Wash or clean as required.
Improper valve setting - Adjust valves as required.
Low octane fuel - Change fuel.
Engine is overloaded - Load reducing required.
Improperly adjusted low idle speed - Correct idle adjustment.
Fuel pump is damaged or dirty - Service or change fuel pump.
Crankshaft or main bearings wear - Have bearings or crankshaft replaced.
Worn piston rings or cylinder bore - Change defective components.
Fuel lines are clogged - Fuel lines must be clean.
Defective fuel injector - Replace fuel injector.
Fuel pump is faulty or clogged - Test fuel pump and replace if necessary.
Defective ignition - Check ignition system and replace faulty parts.
Cylinder head gasket is worn - Change cylinder head gasket.
Powerhead components are damaged - Replace defective parts as required.
Valves are burned or stuck - Change or clean valves.
Incorrect propeller selection - Check the propeller size.
Damaged or bent propeller - Have propeller repaired or replaced.
Engine mounted at wrong transom height - Adjust the engine to correct transom height.
Improper trim angle - Make the correct trim angle adjustment.
| Engine using too much gasoline |
Fuel injector is faulty or clogged - Clean or replace as required.
Spark plug is defective or loose - Spark plug need to be tightened or replaced.
Worn sleeve, rings, or piston - Change faulty parts.
ECU is faulty - Change electronic control unit.
Damaged or bent propeller - Replace propeller.
Propeller shaft malfunction - Propeller shaft needs to be replaced.
Weeds wraped around propeller - Clean the propeller.
Motor mounting bolt is loose - Tighten bolt.
Steering pivot is loose or damaged Tighten or replace.
| Starter motor is not working |
Battery power is low - Battery is drained, charge it.
Battery is draining quickly - Service battery or change it.
Disconnected battery cables or bad terminals - Check wiring and clean or replace terminals.
Damaged starter motor - Change or repair starter.
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