SERVICE MANUAL
  Applies to: Hyundai Coupe/Tiburon 1998-2001
GROUP
Engine Mechanical System General
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TROUBLESHOOTING 
Symptom
Probable cause
Remedy
Low compression
Blown cylinder head gasket
Replace gasket
Worn or damaged piston rings
Replace rings
Worn piston or cylinder
Repair or replace piston and/or cylinder block
Worn or damaged valve seat
Repair or replace valve and/or seat ring
Oil pressure drop
Low engine oil level
Check engine oil level
Faulty oil pressure switch
Replace
Clogged oil filter
Replace
Worn oil pump gears or cover
Replace
Thin or diluted engine oil
Change and determine cause
Oil relief valve stuck (open)
Repair
Excessive bearing clearance
Replace
High oil pressure
Oil relief valve stuck (closed)
Repair
Excessive engine rolling and vibration
Loose engine roll stopper (front, rear)
Re-tighten
Loose transaxle mount bracket
Re-tighten
Loose engine mount bracket
Re-tighten
Loose center member
Re-tighten
Broken transaxle mount insulator
Replace
Broken engine mount insulator
Replace
Broken engine roll stopper insulator
Replace
Noisy valves
Thin or diluted engine oil (low oil pressure)
Change
Worn or damaged valve stem or valve guide
Replace
HLA abnormal operation
Speed the engine up (for venting) or Replace the HLA
Connecting rod and/main bearing noise
Insufficient oil supply
Check engine oil level
Thin or diluted engine oil
Change and determine cause
Excessive bearing clearance
Replace
Timing belt noise
Incorrect belt tension
Adjust belt tension
Symptom
Probable cause
Remedy
Low coolant level
Leakage of coolant
|
1. Heater or radiator hose
Repair or replace parts
2. Faulty radiator cap
Tighten or replace clamps
3. Thermostat housing
Replace gasket or housing
4. Radiator
Repair or replace
5. Engine coolant pump
Replace parts
Clogged radiator
Foreign material in coolant
Replace coolant
Abnormally high coolant temperature
Faulty thermostat
Replace parts
Faulty radiator cap
Replace parts
Restriction to flow in cooling system
Clear restriction or replace parts
Loose or missing drive belt
Adjust or replace
Faulty Engine coolant pump
Replace
Faulty temperature sender or wiring
Repair or replace
Faulty electric fan
Repair or replace
Insufficient coolant
Refill coolant
Abnormally low coolant temperature
Faulty thermostat
Replace
Faulty temperature sender or wiring
Repair or replace
Leakage from oil cooling system
Loose connections
Retighten
Cracked or damaged: hoses, pipes or oil cooler
Replace or repair
Inoperative electrical cooling fan
Damaged: thermo sensor, electrical motor, radiator fan relay, wiring
Replace or repair
Exhaust gas leakage
Loose connections
Re-tighten
Broken pipe or muffler
Repair or replace
Abnormal noise
Detached baffle plate in muffler
Replace
Broken rubber hanger
Replace
Pipe or muffler contacting vehicle body
Correct
Broken pipe or muffler
Repair or replace