Mercury Racing 60R Troubleshooting
| Engine Model: Mercury Racing 60R |
| Engine Type: 4-stroke inline 4-cylinder SOHC 8-valve gasoline outboard engine |
| Total Displacement: 60.8 cu.in (1 L) |
| Rated Engine Power: 60 Hp (41 kW) at 6300 rpm |
| Fuel System: Electronic Fuel Injection (EFI) |
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| Engine starts hard or won't start |
Gas tank is empty - Add gasoline.
Wrong grade of gasoline - Use correct fuel grade.
Air in the fuel lines - Bleed the fuel lines.
Damaged spark plug wiring connection - Inspect the spark plug wire connection, replace or repair.
Faulty spark plug - Replace spark plug.
Plugged fuel filter - Replace fuel filter.
Vapor separator needle valve is worn or defective - Replace needle valve.
Fuel lines clogging - Clean fuel lines.
Fuel tank air vent clogged or closed - Open or clean air vent.
Fuel feed pump failure - Install new feed pump or repair it.
Damaged or not adjusted choke cable - Replace cable or adjust correctly.
Incorrect valve clearance - Adjustment procedure required.
Incorrect valve timing - Adjust valve timing as required.
Low fuel pressure - Inspect fuel system for leaks or inspect low pressure fuel pump.
Fuel injector is faulty or clogged - Clean or replace if necessary.
Fuel regulator malfunction - Install new fuel regulator.
ECM is faulty - Change electronic control modul.
| Engine starts and then shuts off |
Damaged spark plug - Change spark plug as required.
Vapor separator needle valve is bend or wear - Change vapor separator needle valve.
Faulty ignition coil - Install a new ignition coil.
Fuel tank air vent closed or restricted - Open or service air vent.
Fuel pump is faulty - Install new fuel pump or rebuild it.
Faulty choke system - Inspect and replace choke system components.
Valve clearance is wrong - Adjust valve clearance.
Valve timing is wrong - Set the valve timing properly.
Weak or damaged valve springs - Change valve springs.
Valves sticking - Valves must be cleaned.
Bad compression - Check and change damaged parts.
Dirty fuel filter - Fuel filter needs to be replaced.
Fuel injector is dirty or worn - Clean or install new injector.
Engine oil level is low - Check oil level and add oil as required.
Defective oil pump - Change oil pump as required.
Water intake is clogged - Need to wash or clean.
Thermostat is defective - Change thermostat.
Faulty water pump - Change water pump.
Defective ignition system - Inspect ignition system and change failed components.
Fuel pump is damaged or dirty - Clean or change fuel pump.
Worn or defective vapor separator needle valve - Replace needle valve.
Restricted fuel lines - Clean fuel system lines.
Closed or clogged fuel tank air vent - Open or service air vent.
Fuel filter is clogged - Fuel filter needs to be replaced.
Intake manifold is air leaking - Change intake manifold gasket.
Water intake is clogged - Clean and wash as required.
Throttle link and throttle valve are worn or damaged - Change faulty parts.
Fuel injector is damaged or dirty - Clean or replace as required.
Engine is under excessive load - Reduce engine load.
Fuel pump or fuel injector is dirty - Replace or clean if necessary.
Incorrect ignition timing - Adjust ignition timing as required.
Thermostat failure - Change thermostat.
Water pump malfunction - Change water pump.
Propeller selection improperly - Check the propeller size.
Propeller bent or damaged - Replace propeller.
Outboard motor is mounted too high or too low - Position the engine correctly.
Low engine oil level - Checking oil level and add if necessary.
Oil pump malfunction - Oil pump need to be replaced.
Dirty water intake screen - Need to clean or wash.
Improper valve setting - Set the valves correctly.
Low octane gasoline - Change gasoline.
Engine overloaded - Load reducing required.
Low idle speed setting is incorrect - Adjust the low idle speed.
Dirty or defective fuel pump - Check fuel pump and replace if necessary.
Main bearings or crankshaft are worn out - Need to install new components.
Worn cylinder bore or piston rings - Change faulty parts.
| Engine power is insufficient |
Dirty fuel lines - Fuel lines must be clean.
Defective fuel injector - Inspect fuel injector and change as required.
Dirty or faulty fuel pump - Test fuel pump and change if necessary.
Ignition system problems - Check ignition system and replace faulty parts.
Cylinder head gasket is blown - Replace the head gasket.
Faulty powerhead components - Defective components need to be replaced.
Valves are stuck or burned - Service or change valves.
Propeller pitch or diameter incorrect - Replace propeller.
Damaged or bent propeller - Have propeller repaired or replaced.
Engine mounted at wrong transom height - Check the outboard engine mounting height.
Trim angle is incorrect - Make the correct trim angle adjustment.
| Excessive fuel consumption |
Fuel injector is dirty or worn - Clean or replace as required.
Spark plug is defective or loose - Change or re-tighten spark plug.
Piston, sleeve, or rings are damaged - Replace defective parts.
ECU is not functioning - Install new ECU.
| Engine vibrates excessively |
Damaged or bent propeller - Have propeller repaired or replaced.
Propeller shaft malfunction - Have propeller shaft replaced.
Weeds clogs the propeller - Clean the propeller.
Engine mounting bolt is not tightened - Tighten bolt.
Loose or faulty steering pivot Tighten correctly or replace.
| Starter motor is not working |
Battery power is low - Recharge the battery.
Battery is not holding charge - Service battery or replace it.
Terminals are faulty or battery cables are disconnected - Check battery wires and service or replace terminals.
Starter motor failing - Starter should be changed.
| Trim motor is running but trim system cannot move up or down |
Oil insufficient - Fill up oil to required level.
Pump assembly faulty - Check pump and replace if necessary.
Leakage of manual release valve - Valve need to be closed or changed.
Pump driveshaft or motor damaged - Change defective component.
| Trim does not fully up or down |
Defective pump assembly - Replace pump.
Tilt ram piston ball is in wrong position - Clean or repair.
Worn tilt ram piston O-ring - Install new O-ring.
Low oil level - Fill up oil to required level.
Lower check valve is not properly secured in port side trim ram - Install valve correctly.
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