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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Honda Passport Revving Problem Diagnosis
1994 Honda Passport
The owner of a 1994 Honda Passport is experiencing a significant performance issue where the vehicle cannot rev past 4000 RPM. When accelerating from ...
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1991 Chevy S-10 No Start When Hot
1991 Chevrolet S-10
The owner reports that their 1991 Chevy S-10 with a 4.3L engine starts normally when cold but fails to start when hot. They noted that fuel is not inj...
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1991 Ford Probe Cranks but Won't Start
1991 Ford Probe
The owner of the 1991 Ford Probe reported that while driving, the engine shut off unexpectedly. Upon inspection, oil was found spilled under the hood,...
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1994 Saturn Models Car Won't Start Diagnosis
1994 Saturn Other Models
The owner reports that their 1994 Saturn model will not start. They have replaced the fuel filter recently and used starter fluid in the throttle body...
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1990 Chevrolet Truck Serpentine Belt Issues
1990 Chevrolet 1500
The owner of a 1990 Chevrolet 1500 454 SS is experiencing frequent failures of the serpentine belt tensioner. The smoke pump and idler pulley have bee...
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1992 Volvo 850 Cranking but Not Starting
1992 Volvo 850
The owner reports that their 1992 Volvo 850 is cranking but not starting. They checked the spark plugs, which show spark, and confirmed that the fuel ...
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1992 Ford Ranger 2.3L Backfire and Power Loss Issues
1992 Ford Ranger
The owner reports a 1992 Ford Ranger XLT 2.3L experiencing significant starting difficulties requiring extensive cranking and throttle application. Th...
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1994 Ford Ranger Truck Stalls after 15-20 minutes
1994 Ford Ranger
The owner reports that their 1994 Ford Ranger stalls after running for 15-20 minutes. Previous repairs include replacing the cam position sensor, cran...
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1993 Nissan 240SX Power Loss and Stalling Issues
1993 Nissan 240SX
The owner reports that the vehicle feels like it wants to turn off when accelerating, experiencing a misfire and loss of power. Despite performing ful...
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Intermittent Stumbling During Light Acceleration
1990 Jeep Wagoneer
The owner reports that their 1990 Jeep Wagoneer with a 4.0L inline-6 engine experiences stumbling during light acceleration, accompanied by a slight b...
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Cold Start Issues on 1990 Ford Bronco 5.8L
1990 Ford Bronco
The owner of a 1990 Ford Bronco 5.8L with about 100,000 miles reports difficulty starting after the vehicle sits overnight. When the key is turned on,...
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1990 Ford Ranger 4.0 White Smoke Diagnosis
1990 Ford Ranger
The owner has a 1990 Ford Ranger with a 4.0L engine that recently had the heads replaced along with all new gaskets but is still emitting white smoke....
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Power Steering Pulley Removal Issues on 1994 Chevy 1500
1994 Chevrolet 1500
The owner of a 1994 Chevy 1500 truck is struggling to remove the power steering pulley to replace the pump. Despite using a gear puller, the pulley re...
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Mazda RX-7 Won't Start Despite Fuel and Spark
1990 Mazda RX-7
The owner reports that their 1990 Mazda RX-7 with a 1.3L engine and 170,000 miles will not start, despite having fuel and spark. The battery is fully ...
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Steering Wheel and Dashboard Vibration Diagnosis
1998 Honda Accord
The owner reports a significant vibration in the steering wheel and dashboard of their 1998 Honda Accord 4-cylinder sedan. This occurs when applying t...
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Power Steering Belt Adjustment on 1987 Chevy Nova
1987 Chevrolet Nova
The owner of a 1987 Chevy Nova is seeking assistance to locate the adjustment bolt for the power steering belt and how to properly adjust it. They hav...
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1986 Toyota Camry No Fire to Plugs Diagnosis
1986 Toyota Camry
The owner reports that their 1986 Toyota Camry lost power while driving, began bucking, and then died without restarting. Previous checks included rel...
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1979 Ford E-Series Van Losing Spark
1979 Ford E-Series Van
The owner reports that their 1979 Ford E-Series Van starts and runs, but then shuts down unexpectedly. They have replaced various components including...
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