• Park the vehicle in a garage with the garage door open. (Sound amplifies best in enclosed areas, especially on solid floors.) Put the transmission in neutral or park with the emergency brake on. Make sure the exhaust pipe exhaust flows out of the door. Lift the hood of the vehicle.
• Place the side of the vehicle with the exhaust system. Small four – cylinder engines are on one side — dual exhaust systems occupy both sides. Listen carefully a sound that resembles the sound of “slap” or “plapping” which is a breath of escaping air quality to it. Exhaust leak noises come in a variety of frequencies, but mostly commonly sounds like a “plap plap plap” or a dull ticking. It has an increase auxiliary engine and keeps the rpm above idle. Sound repetitions increase. Check this article for Audi R8 V8 Performance Exhaust System
  
• Assistant Potenza, a large piece of cardboard on the exhaust manifold, or in a vehicle, exhausts dual exhaust. With the engine idling, the wizard has momentarily thrown the cardboard collectors. Any indication of volume change point to a leaky exhaust Board. Note: Do not place the cardboard on the intake manifold (less than four cylinders) or valve covers (old model).
• Have the wizard momentarily restrict the exhaust opening by using a cloth cutting airflow. Apply the cloth for some seconds, and then remove. Repeat several times. While you’re at the front of the vehicle, to hear a volume change – the exhaust leak increase in volume with the restricted exhaust pipe. The noise will decrease in volume when the cloth is removed.
• Lean on defense and try to detect the smell of gas oil. An exhaust fuel traces of unburned eject has not completed its cycle through the catalytic converter. The smell is sometimes accompanied by the sight of the exhaust gasses dirty, brown. Sometimes gasses appear gray or even black, with a very strong smell of fuel.

Put you on defense and leans over the engine compartment. You heard a tapping sound, sometimes a light touching “metallic” sound. Moving around the vehicle to determine which of the engine noise emanates. In older model vehicles with V-6 or V-8, equipped with valve covers, the noise will come from the top of the valve cover. In engines, camshaft noise originates at the top of the intake manifold.

Place the handle of a screwdriver long axis in the ear with the tip about the alleged location of the noise. Reposition the screwdriver, moving from the back of the engine to the front. An elevator interior noise to produce a metal hitting metal or hear the sound when the screwdriver tip is directly above it. Use an automotive stethoscope to listen to a clearer indication of the noise. A metal vibration noise often accompanies the elevator that can be felt through the listening tool.

Remove the air cleaner or hose inlet air filter box. Momentarily cover the air inlet (without choking the engine) with a cloth. Audi R8 exhausts Remove and replace and listen carefully. With the rag removes a lifter noise will increase in volume.

Remove the oil filler cap tube pipe or valve cover (depending on the age and model). An elevator noise increases dramatically when the lid is off. Note: A collapsed or severely worn lifter may cause a lack of detectable motor.

Champion Motor Sport is a top rated Porsche dealer of the Champion Group in Florida, USA. They have a knowledgeable team of auto mechanics and more advanced technology to test and repair all problems of high end sports cars like Porsche, Ferrari, Audi, Lamborghini and many more. Bringing your vehicle at Champion Motorsport repair center is a sure-fire way of making sure your vehicle lasts for years to come.