Engine Knocks - Northern Lights M843NW3 Operator's Manual

ENGINE
PROBLEM
Lack of Engine Power
(continued)
Engine Overheats

Engine Knocks

High Fuel Consumption
If you cannot correct problems with these procedures, see your Northern Lights dealer.
Troubleshooting
POSSIBLE CAUSE
Overheated engine
Below normal engine temperature
Improper valve clearance
Dirty or faulty injection nozzles
Poor cylinder compression pressure • Check bore for wear, or check alignment of
Low coolant level
Air cleaner element clogged
Keel cooling tubes
have been painted (marine)
Cooling system interior dirty
Defective thermostat
Defective temperature gauge
Water pump impeller worn/broken • Check impeller and replace if necessary.
V belts slipping
Insufficient oil
Injection pump out of time
Below normal engine temperature
Engine overheating
Improper type of fuel
Clogged or dirty air cleaner
Improper valve clearance
Injection nozzles dirty
Injection pump out of time
Engine not at proper temperature
OM843NW3 11/13
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RECOMMENDATION(S)
• See "Engine Overheats" in next category.
• Remove and check thermostat.
• Reset valves. Best done by dealer.
• Replace injectors. Best done by dealer.
• See your local dealer.
nozzle holder. Re-adjust valve clearance.
• Fill tank or radiator to proper level, with
proper mixture of coolant.
• Check hoses for loose connections
and leaks.
• Clean or replace.
• Remove paint from tubes.
• Flush cooling system.
• Remove and check thermostat.
• Check water temperature with thermometer
and replace gauge if necessary.
• Fix belts to proper tension.
• Call your dealer.
• Call your dealer.
• Check your thermostats.
• Check water temperature to see if
temperature gauge is working properly.
• See "Engine Overheating" section.
• Use correct fuel for temperature.
• Service air cleaner.
• See your dealer.
• See your dealer.
• See your dealer.
• Check your thermostats.
• Check water temperature with thermometer
and replace gauge if necessary.