a pop-corn popping sound from the intake is usually cam timing being off, a “clacking” sound from the valve cover is either the timing chain/guides or something loose, and a small “clicking” sound is injectors. T_T.Click to see full answer. Similarly one may ask, what does it mean when your car makes a popping noise?Damaged CV joint: The most common cause of a clicking or popping sound from the wheels is a broken CV joint. When a CV joint becomes damaged, the axle loses its flexibility, and will make a constant clicking noise when the wheels are turned. Bad struts: Your struts are an important part of your suspension system.Subsequently, question is, what causes popping sound in exhaust at idle? Now if the car sounds like a real slight miss or pop at idle, it could be a burnt exhaust valve or an exhaust valve not fully seating and seal properly. It could be spotted in a compression or leak down test. It probably won’t cause to much of a problem for now, but could cause some damage down the road. Likewise, people ask, why does my car sound like popcorn? If the popping sound is more rhythmic and occurs more frequently as you rev the engine, you may want to look for an exhaust leak. A blown exhaust gasket can cause some pretty loud sounds from that area, but it will always be louder and faster as you rev the engine higher.What do bad struts sound like?When compressed, the knocking sound that is often heard is caused by the strut “bottoming out” or metal-to-metal contact. If you notice a knocking or clunking sound coming from an area near the front or rear tires, it’s most likely due to worn out or broken struts.

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