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Follow these paths in your subscription to PATH: Engine Electrical > Distributor Ignition System > Diagnosis & Testing > Secondary Spark Test - Recheck the ignition system, make sure you have a hot spark on all cylinders. PATH: Engine Electrical > Distributorless Ignition System >...

It very well could be. Fuel pumps are notorious for failing at the gas pump. Another possibility is the vapor recovery system for the fuel tank. I would have the fuel pressure tested and test for trouble codes (DTCs). Learn about your car's fuel system, testing, fuel pressure specifications, and...

Hi Eric. Scan your vehicle's computer for diagnostic trouble codes (DTCs), this might help you pin down the problem. If there are no DTCs related to the symptoms, check out the section "What to do when there are no DTCs" for troubleshooting charts and checks. Use the navigation tree...

Hi Sierra. Have the LeSabre's front and rear suspension checked for loose or worn suspension components for your clunking noise. Check the tires for uneven wear, balance and alignment. There is a technical service bulletin (TSB) that might apply. It is called "Info on popping or thunk noise...

1999 F350 Fuel System 6.8L The fuel pressure should be between 28-45 psi with the engine running. Fuel pressure should hold when the vehicle is off. If the pressure bleeds off, that is usually a faulty fuel pressure regulator. The fuel pressure regulator should be located on the fuel rail,...