You may be surprÂ­ised to discover that a carbon monoxide (CO) detector really isn't a complicated piece of equipment. Housed inside a plastic chamber approximately 3 inches (7.6 centimeters) in diameter are parts that work in unison to alert a househoÂ­ld when lethal gas is detected.
This type of noise is usually caused by malfunctioning valve lifters or an exhaust manifold leak. If the noise lasts for more than a minute and completely disappears or dimishes after the engine is warm, the most likely cause is an exhaust manifold leak.
If the washer is noisy or loud, particularly when the washer is filling, the water inlet valve may be at fault. Over time, mineral deposits can build up inside the valve and cause a restriction. If the water inlet valve is restricted, it will make noise during the fill cycle.