Rust is a bourgeois consideration for exhaust leaks.
Whether your "evaluation engine" flash comes on, provided your engine ticks or whether you Aroma antifreeze, your vehicle might retain an exhaust leak. If you effect the repairs yourself or select your van to a mechanic, locating the leak helps confirm the repair is trumped-up licence and that you don't overspend. Happily, it doesn't catching lenghty to establish an exhaust leak.
Instructions
1. Let the car cool down. When the engine gets warm, the metal expands, hiding small leaks from view.
2. Examine the exhaust system without the engine running to see if any holes or slits are visible. Start at the engine and work your way to the tailpipe. Check each connector because they they are most prone to leakage.
3. Check the exhaust manifold. It's possible for the exhaust manifold to become warped and cause a leak. This is more common in older vehicles. A simple hand inspection should tell you if anything feels out of place or if any holes have formed. Check the gasket that connects the manifold to the cylinder head. It's common for that gasket to crack and cause a leak.
4. Look for holes in the exhaust pipe, especially where the pipe bends over the rear axle.6. Using a mechanic's stethoscope, listen for an exhaust leak. The stethoscope isolates the sound of the engine, making it easier for you to hear escaping exhaust fumes.
Have your helper cover the tailpipe by sticking a piece of metal over it and start the engine. This restricts the flow of exhaust gases and pressurizes the exhaust system. Without touching hot metal, carefully move your hands around the outside of the entire exhaust system to feel for any exhaust fumes coming out of strange places.
That portion frequently cracks or leaks. Check rusty spots to see if it's just surface rust, or if it goes all the way through the pipe.5. Feel for leaks.
