Exhaust system servicing — general information Ford F150
Warning: Inspection and repair of exhaust system components should be done only after enough time has elapsed after driving the vehicle to allow the system components to cool completely. Also, when working under the vehicle, make sure it is securely supported on jackstands.
Be sure to apply penetrating fluid to the exhaust flange nuts before attempting to remove them
Check the condition of the rubber hangers that support the exhaust system
1. The exhaust system consists of the exhaust manifold, the catalytic converter, the resonator, exhaust pipe, muffler and all brackets, hangers and clamps. The exhaust system is attached to the body with mounting brackets and rubber hangers If any of the parts are damaged or deteriorated, excessive noise and vibration will be transmitted to the body.
2. Conducting regular inspections of the exhaust system will keep it safe and quiet. Look for any damaged or bent parts, open seams, holes, loose connections, excessive corrosion or other defects which could allow exhaust fumes to enter the vehicle. Also check the catalytic converter when you inspect the exhaust system (see Emissions and engine control systems). Deteriorated exhaust system components should not be repaired; they should be replaced with new parts.
3. If the exhaust system components are extremely corroded or rusted together, they will probably have to be cut from the exhaust system.
The convenient way to accomplish this is to have a muffler repair shop remove the corroded sections with a cutting torch. If, however, you want to save money by doing it yourself (and you don’t have a welding outfit with a cutting torch), simply cut off the old components with a hacksaw. If you have compressed air, special pneumatic cutting chisels can also be used. If you decide to tackle the job at home, be sure to wear safety goggles to protect your eyes from metal chips and work gloves to protect your hands.
4. Here are some simple guidelines to follow when repairing the exhaust system:
- Work from the back to the front when removing exhaust system components.
- Apply penetrating oil to the exhaust system component fasteners to make them easier to remove.
- Use new gaskets, hangers and clamps when installing exhaust systems compo
- Apply anti-seize compound to the threads of all exhaust system fasteners at reas
- Be sure to allow sufficient clearance between newly installed parts and all points on the underbody to avoid overheating the floor pan and possibly damaging the interior carpet and insulation. Pay particularly close attention to the catalytic converter and heat shield.