Troubleshooting; Problem: Engine Will Not Start Or Is Difficult To Start; Problem: Engine Suddenly Stops Running - Hyundai HDFN35T Operation And Maintenance Manual

TROUBLESHOOTING

PROBLEM: ENGINE WILL NOT START OR IS DIFFICULT TO START

Possible Cause
Engine doesn't crank
Or crank slowly.
Insufficient fuel flow
Improper valve clearance
Low compression
Incorrect fuel injection
timing

PROBLEM: ENGINE SUDDENLY STOPS RUNNING

Possible Cause
Lack of fuel
Clogged or faulty fuel
injector(s)
Seizure due to lack of
lubrication
• Change oil level by whether (temperature).
• Check battery and cables
• Ensure that there is fuel in the tank.
• Clean the fuel system and replace fuel if water, dirt or other impurities are present.
• Check the fuel filter. Clean or replace as required.
• Check and bleed air from fuel filter, injection pump and fuel lines.
• Check and clean injection nozzles, being careful not to damage the orifice.
• Replace injection nozzle(s) if not working properly after cleaning.
• Check and adjust valve clearance when the engine is cold.
HB29D1, HB36D1 : intake 0.25mm, exhaust 0.30mm
• Check valves for leakage – grind valves to correct.
• Check for bad valves, piston wear, ring damage or wear, or liner wear.
Have parts replaced.
• Proper injection timing (crank angle before top dead center) : 18°
• Check fuel level and refill.
• Check the fuel system. Repair leaks and bleed air from the system.
• Clean or replace as needed.
• Check for and repair leaks. Fill to correct oil level.
• Check for clogged oil filter and replace.
• Check oil pump and lubrication system.
• Check to see if engine bearing clearance is within specifications.
• Follow oil and filter service instructions to prevent future occurrences.
Corrective Action
Corrective Action
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