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exhaust system

He's correct in that the sienna catalyst is integral with the exhaust manifold. That is done by the manufacturer to ensure that the catalyst reaches operating temperature as quickly as possible. It's not true of all cars so your friends...

White smoke is an indicator that the engine is burning coolant. The fact that the engine idles poorly points toward a problem with the cylinder head; most commonly, the head gaskets. When the gaskets fail, a leak between the cylinder(s),...

Oxygen sensors O2 sensors (https://www.yourmechanic.com/article/where-is-the-o2-sensor-located) will always be located in the exhaust system. Their function is to sense how much oxygen remains in the exhaust that is flowing out of the engine, and report that information to the vehicle’s engine...

The only part you did not mention and the most likely cause of the problem is the inside lower control bushings which could possibly be bad. I would also check the steering gear mount bushings for excessive wear. Both of...

Hi, the blue tint you mentioned is in fact from oil burning. Over time the internal engine components, specifically the piston o-rings and the valves, wear out and oil starts seeping into the cylinders and burning with the air and...

Hello. There are several possibilities that could explain why you are having this problem. One possibility is that you could have one or more faulty fuel injectors (https://www.yourmechanic.com/services/fuel-injector-replacement), or the fuel injector wiring is damaged. Another possibility is that one...

Hello there, thank you for asking about your 1991 Geo Storm. After your comment about flooding the parking lot with steam, this symptom leads me to believe you may have a failed head gasket. A failure in this seal will...

The exhaust is the same except for after the muffler on most of them. The F150 has long and short frames, and I am not sure which one is the same as the Expedition. Your best bet is to get...

Hello. The symptoms and situation that you describe are commonly associated with an exhaust leak. If your muffler or exhaust pipes were bent when the accident occurred then it is very possible that they developed an exhaust leak and are...

You are correct. The most likely cause of an intake manifold leak, is gasket failure. These gaskets fail for a number of reasons and can be swapped out in a day. The majority of the process is removing the manifold...

Hello. White smoke out of the exhaust usually means that there is coolant getting into the cylinder head, or engine block. The most common cause of this is a blown head gasket. This means that the head gasket that sits...

White smoke is an indication of coolant burning, especially if you having to add coolant frequently. If the white smoke is coming out the exhaust pipe then it is most likely being consumed in the combustion chamber. A common cause...

Oxygen sensors O2 sensors (https://www.yourmechanic.com/article/where-is-the-o2-sensor-located) will always be located in the exhaust system. Their function is to sense how much oxygen remains in the exhaust that is flowing out of the engine, and report that information to the vehicle’s engine...

If the smoke is white, you're burning coolant, if the smoke is blue, you're burning oil, if the smoke is black, you're running rich (too much gas). A qualified technician, like one from YourMechanic, can help you identify the problem...

Hello, it sounds like you may have a gasket or seal leaking on your car. Smoke in the exhaust could indicate 2 things: you're burning oil or you're burning coolant. If you're burning oil that usually means your valve seals...

This is a common issue. Many of the radiators installed in vehicles are aluminum cores with plastic water tanks. There is a gasket that seals them together. Over time the gasket fails and water starts to leak from between the...

Hello, it sounds like you may have a gasket or seal leaking on your car. Smoke in the exhaust could indicate 2 things; you're burning oil or burning coolant. If you're burning oil that usually means your valve seals and...

Hello, the Dex-cool GM requires for using in your vehicle is known to thicken and clog up the cooling system. Also, The noise you describe is a common sign of a leaking exhaust system and should be inspected (https://www.yourmechanic.com/services/noise-from-engine-or-exhaust-inspection). I...

Hello. From my experience with this truck this is usually caused by a wiring issue on that side of the engine. If the ground loses connection then one side of the engine will begin to misfire (https://www.yourmechanic.com/services/engine-is-misfiring-inspection) and this will...

The exhaust manifolds are known to warp on these engines, causing an exhaust leak. This is typically most noticeable when the engine is cold, before the metal heats up and expands. The only solution is to replace the manifold(s). However,...