SERVICING INFORMATION 9-5
ENGINE IDLES POORLY
ENGINE STALLS OFTEN
Symptom, possible causes and remedy
• Valve clearance out of adjustment.
• Poor seating of valves.
• Defective valve guides.
• Worn down camshafts.
• Too wide spark plug gaps.
• Defective ignition coils.
• Defective CKP sensor.
• Defective ECM.
• Defective TP sensor.
• Defective fuel pump.
• Imbalanced throttle valve or STV.
• Damaged or cracked vacuum hose.
Adjust.
Replace or repair.
Replace.
Replace.
Adjust or replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Adjust.
Replace.
Symptom, possible causes and remedy
1) Incorrect fuel/air mixture
• Defective IAP sensor or circuit.
• Clogged fuel filter.
• Defective fuel pump.
• Defective fuel pressure regulator.
• Defective ECT sensor.
• Defective thermostat.
• Defective IAT sensor.
• Damaged or cracked vacuum hose.
2) Fuel injector improperly operating
• Defective fuel injectors.
• No injection signal from ECM.
• Open or short circuited wiring connection.
• Defective battery or low battery voltage.
3) Control circuit or sensor improperly operating
• Defective ECM.
• Defective fuel pressure regulator.
• Defective TP sensor.
• Defective IAT sensor.
• Defective CKP sensor.
• Defective ECT sensor.
• Defective fuel pump relay.
4) Engine internal parts improperly operating
• Fouled spark plugs.
• Defective CKP sensor or ECM.
• Clogged fuel hose.
• Valve clearance out of adjustment.
Repair or replace.
Clean or replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Repair or replace.
Repair or replace.
Replace or recharge.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Clean.
Replace.
Clean.
Adjust.
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Содержание 2005 DL650K5
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