Engine System Fault Analysis Cases
Comprehensive collection of engine system fault analysis cases. Get detailed diagnostic solutions for starting issues, performance problems, ignition system faults, and cooling system failures.
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1994 Volkswagen Corrado Irregular Revving When Cold
1994 Volkswagen Corrado
The owner reports that their 1994 Volkswagen Corrado experiences erratic revving after a cold start, initially revving to 2000 RPM and then dropping t...
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1990 Mitsubishi Mirage Engine No Start Diagnosis
1990 Mitsubishi Mirage
The owner of a 1990 Mitsubishi Mirage with a 1.5L MPFI engine reports that the engine will not fire. They mentioned that the timing was confirmed to b...
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1992 Saturn SL1 Engine Light On with Jerking Issue
1992 Saturn SL1
The owner reports that the engine light is on, and the car jerks when accelerating, particularly at high speeds. The check engine light was confirmed ...
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1991 Mitsubishi Galant Stuck at Idle with No Start
1991 Mitsubishi Galant
The owner recently purchased a 1991 Mitsubishi Galant with a 4-cylinder engine and 5-speed manual transmission. After warming up the vehicle, it would...
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1990 Chevy Corsica Engine Knocking Diagnosis
1990 Chevy Corsica
The owner reports a knocking noise from the engine that started after an unsuccessful acceleration attempt. Initially, they suspected running out of g...
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1992 Lexus LS 400 Knock Sensor Diagnosis
1992 Lexus LS 400
The owner reports experiencing engine performance issues with their 1992 Lexus LS 400, specifically a lack of power and poor fuel economy. They notice...
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1994 Honda Civic Dx Engine Knock Diagnosis
1994 Honda Civic
The owner of a 1994 Honda Civic Dx reports a knocking noise coming from the engine, predominantly noticeable in lower gears (first and second). The no...
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1992 Buick Century Limited Stalling and Restarting Issues
1992 Buick Century
The owner reports that the 1992 Buick Century Limited starts fine but experiences jerking during driving, followed by the temperature light turning on...
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1990 Nissan Xterra 'Service Engine Soon' Light Diagnosis
1990 Nissan Xterra
The 'Service Engine Soon' light in my 1990 Nissan Xterra has been illuminated consistently. Additionally, I've noticed a slight oil leak from the left...
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1991 Toyota Landcruiser Engine Mechanical Problem
1991 Toyota Landcruiser
The owner reports that the oil pan has been removed from the engine but will not drop out due to two large bars obstructing it. They are unsure about ...
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1991 Dodge Dynasty Timing Belt Diagnosis
1991 Dodge Dynasty
The owner replaced the timing belt on a 1991 Dodge Dynasty 2.5L after it broke while driving. After installation, the car starts but runs poorly with ...
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1992 Toyota Corolla Metallic Grinding Noise Diagnosis
1992 Toyota Corolla
The owner reports that their 1992 Toyota Corolla has developed a metallic grinding noise that is most noticeable while idling in any gear (Park, Neutr...
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1993 Mazda Protege Engine Vibration Diagnosis
1993 Mazda Protege
The owner of a 1993 Mazda Protege reports persistent engine vibrations starting immediately upon ignition. The vibrations intensify significantly when...
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1993 Ford Taurus SHO Won't Start Diagnosis
1993 Ford Taurus SHO
The owner has a 1993 Ford Taurus SHO with a 3.2L engine and 186,000 miles. As colder weather arrived, the vehicle's starting issues worsened, eventual...
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1991 Jeep Wrangler Cutting Out During Load
1991 Jeep Wrangler
The owner reports that their 1991 Jeep Wrangler intermittently cuts out or loses power, particularly under load or while driving. They noted that if t...
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1992 Ford Mustang Won't Start - Fuel Pressure Concern
1992 Ford Mustang
The vehicle owner reports that their 1992 Ford Mustang occasionally fails to start. The owner has noticed that if they push the gas pedal all the way ...
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Shaking and Vibrations in 1992 Honda Prelude
1992 Honda Prelude
The owner describes a 1992 Honda Prelude with an automatic transmission and 181,000 miles experiencing harsh jerking and vibrations when placed in gea...
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1990 Jaguar XJ6 No Start Diagnosis
1990 Jaguar XJ6
The owner reports that their 1990 Jaguar XJ6 turns over but does not start. They mention that there is spark and fuel flow, but the engine fails to ig...
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