ASE master tech

Hard Starting Engine: Diagnosis and Repair

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Hard Starting Engine: Diagnosis and Repair

Quick Answer: A “hard starting engine” typically means the engine cranks but takes longer than usual to fire up. This is usually caused by a loss of fuel pressure overnight, failing ignition components, or sensor data errors (like a bad Coolant Temperature Sensor). The Tuesday Morning Troublemaker It was 7:15 AM on a biting cold Tuesday … Read more

Engine Knocking Noise: What It Means and How to Fix It

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Engine Knocking Noise: What It Means and How to Fix It

Quick Answer Engine knocking noise is a metallic pinging or rattling sound caused by abnormal combustion (detonation) or worn mechanical parts. Common fixes: use higher-octane fuel, clean carbon buildup, replace spark plugs, or repair bottom-end bearings. DIY cost: $20–$400. Shop cost: $200–$3,500. Tuesday, 7:15 a.m., 38 °F in the shop—my coffee hadn’t even cooled when … Read more