Q: what could cause my mercedes 560sec to smoke when it warms up but not all the time

The Tire Pressure feature in the driver information center (DIC) displays approximations of the pressure in each of your four tires. To access Tire Pressure, press the MENU button until the DIC displays Vehicle Information Menu, then use the toggle...

Performing an engine teardown and rebuild is a high magnitude job. Even for a skilled mechanic, there are often little problems just like the one you are experiencing that usually occur afterward. This is especially true if it is your...

The code P0304 is a misfire on cylinder number four. The reason it is misfiring at cruising speed is that is when the engine is running its leanest and the coil is finding an easier path to ground than through...

Hello. Leaks, especially from the head gasket, are problematic because they can lead to overheating and engine damage. This is something that you will want to take care of sooner or later. I would recommend having a technician locate the...

Loss of compression in a cylinder is a sign of physical/mechanical damage such as; a bent intake or exhaust valve, a leaking head gasket. Or possibly a hole in the piston, block, or cylinder head. The combustion chamber could also...

There are a number of things that can cause your ignition to lock up. I am assuming you are speaking of the ignition lock cylinder (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-ignition-lock-cylinder) which is what the key inserts into. The easy one is to turn the...

Hello. Your car is equipped with wheel speed sensors (https://www.yourmechanic.com/services/wheel-speed-sensor-replacement) at each of the four wheels which monitor wheel speed while relaying this information constantly to the ABS and traction control system which are controlled by the car's ECU. When...

What you are describing sounds like a dirty or failing idle air control valve. The idle air control valve (https://www.yourmechanic.com/services/idle-control-valve-replacement) monitors the air intake as it is mixed with fuel prior to being injected into the engine at low speeds...

Sounds like the automatic transmission might be failing. The mileage and age are about right. If there is a dipstick, you can check the fluid yourself, (https://www.yourmechanic.com/article/how-to-check-and-add-fluid-to-an-automatic-transmission) but many cars made after the late 1990,s don't even have a dipstick...