Fuel System Fault Analysis Cases
Comprehensive fuel system diagnostics including fuel pump failures, delivery issues, fuel economy problems, and injection system faults.
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83 Jeep CJ7 White Smoke Diagnosis
1983 Jeep CJ7
The owner reports white smoke emitting from the exhaust while idling, accompanied by a strong fuel smell. Additionally, black marks are left on the pa...
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2002 Oldsmobile Bravada Fuel Delivery Issues
2002 Oldsmobile Bravada
The owner reports that the 2002 Oldsmobile Bravada starts fine with fuel pressure at 52 PSI but loses pressure to zero after shutdown and won't restar...
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Intermittent Stalling Issue in 1997 Jeep Cherokee
1997 Jeep Cherokee
The owner of a 1997 Jeep Cherokee reports intermittent stalling while driving at 10-30 mph. The RPMs unexpectedly drop to idle without releasing the g...
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1983 Pontiac 6000 TBI Fuel Leak Diagnosis
1983 Pontiac 6000
The owner reports that their 1983 Pontiac 6000 with a 2.5L TBI engine experiences a severe fuel leak when attempting to start the vehicle. Gasoline gu...
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Fuel Filter Location and Replacement Guidance
1998 Chrysler Concorde
The vehicle owner is trying to locate the fuel filter on their 1998 Chrysler Concorde. They do not see a filter under the car and are uncertain whethe...
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2002 Chevy Venture Coolant Leak Diagnosis
2002 Chevrolet Venture
The owner of a 2002 Chevy Venture reports a coolant leak, which seems to be originating from the area around the thermostat housing. The owner has not...
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2000 Dodge Ram Diesel Fuel Delivery Issue Diagnostics
2000 Dodge Ram
The owner of a 2000 Dodge Ram diesel truck reports that the vehicle quit running abruptly after hitting a severe bump. They are concerned about a pote...
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2000 Chevy Blazer Code P0452 Diagnostics
2000 Chevrolet Blazer
The owner reports a persistent P0452 EVAP code on their 2000 Chevy Blazer. They have replaced the fuel pump, fixed a previous vacuum leak, and replace...
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1985 Toyota MR2 Fuel Delivery Issues
1985 Toyota MR2
The owner of a 1985 Toyota MR2 reports that after replacing the EFI relay switch, fuel pump, and filters, the vehicle now idles fine but loses power w...
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1998 Audi A8 Engine Mechanical Problem Diagnosis
1998 Audi A8
The vehicle owner reports that the 1998 Audi A8 is experiencing an engine mechanical issue, primarily showing no injector pulse even though there is g...
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1998 Ford Escort ZX2 A/C Compressor Issue Diagnosis
1998 Ford Escort ZX2
The owner of a 1998 Ford Escort ZX2 with a 2.0L DOHC engine and 111,000 miles reports that the A/C compressor only operates when the high-pressure swi...
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2006 Jeep Laredo Hesitation Issue Diagnosis
2006 Jeep Laredo
The owner of a 2006 Jeep Laredo with 140,000 miles reports that the vehicle hesitates during driving. The RPMs are not steady, but there are no warnin...
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Cruise Control and Fuel Gauge Malfunction
2006 Lincoln LS
The owner of a 2006 Lincoln LS reports that the cruise control system shuts off by itself, and the traction control light remains on and blinks. Addit...
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No diesel is pumping out after fuel filter change
2007 Ford Focus
The owner of a 2007 Ford Focus 1.8 TDCi changed the fuel filter but the vehicle won't start. They have checked for air in the system and bled it, but ...
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2008 Toyota Fuel Pump Diagnosis After Filter Replacement
2008 Toyota Other
The owner replaced the in-tank fuel filter due to the vehicle shutting off while driving and the check engine light illuminating. After the replacemen...
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1991 Buick Skylark V6 3300 Won't Run Diagnosis
1991 Buick Skylark
The owner reports that their 1991 Buick Skylark with a V6 3300 engine won't run after sitting for two years. The car cranks but immediately shuts off....
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2005 GMC Savana Gas Fill Problem Diagnosis
2005 GMC Savana
The owner of a 2005 GMC Savana reports issues filling the gas tank, experiencing possible vapor lock. The gas tank seems to overflow and fuel may ente...
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Fuel Filter Location for 2008 GMC Yukon
2008 GMC Yukon
The owner of a 2008 GMC Yukon is looking for the fuel filter location. They have heard conflicting information about whether it is in the tank or alon...
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