
EM -20
ENGINE DOHC
TROUBLESHOOTING
E6712BDA
Symptom
Probable cause
Remedy
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
Low compression
Worn or damaged valve seat
Repair or replace valve and/or
seat ring
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
Low oil pressure
Excessive bearing clearance
Replace
High oil pressure
Oil relief valve sutck (closed)
Repair
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
Excessive engine vibration
Broken engine roll stopper insulator
Replace
Thin or diluted engine oil (low
oil pressure)
Change
Worn or damaged valve stem
or valve guide
Replace
Noisy valves
HLA abnormal operation
Speed the engine up (for venting)
or Replace the HLA
Insufficient oil supply
Check engine oil level
Thin or diluted engine oil
Change and determine cause
Connecting rod and/or main
bearing noise
Excessive bearing clearance
Replace
Timing belt noise
Incorrect belt tension
Adjust belt tension
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
Low coolant level
5. Engine coolant pump
Replace parts
Clogged radiator
Foreign material in coolant
Replace coolant
ZENITH POWER PRODUCTS - 416
Содержание ZPP 416
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