Well, hello there, friend. I believe the engine coolant drain plug on a 2001 Buick Century is located at the bottom of the radiator. It's a small valve that you can open to let the coolant drain out. Remember to work gently and take your time, there's no rush when taking care of your car.
There are several drain plugs on that vehicle, radiator (coolant), block (coolant), engine oil, trans oil, etc. There are usually located at the lowest point of that particular system.
Dsconnect the rubber hose at the bottom.
its at the bac of the engine under the cooler cables
The radiator on a 98 Buick Century is flushed by turning the petcock to drain the coolant. Water is then flushed through the system until all contaminants are removed.
The flush valve for the radiator on a 1999 Buick Century is located on the bottom of the radiator near the vehicle's frame. When it is loosened, the coolant will slowly drain from the vehicle.
Is there a drain plug on a 2005 Buick century
You drain coolant from the radiator. but according to the book ther are two plugs on the engine block that need to drain the coolant from.
To change the thermostat on a 1994 Buick Century, start by ensuring the engine is cool, then disconnect the negative battery cable. Drain the coolant from the radiator, and remove the thermostat housing by loosening the bolts. Take out the old thermostat, clean the mating surfaces, and install the new thermostat with the correct orientation (usually with the spring side facing the engine). Finally, reassemble the housing, refill the coolant, and reconnect the battery.
To actually "flush" the coolant in this vehicle you will need a flush machine. To do that we did at the dealership, drain the radiator (you need a 1/4 inch ratchet and 1 inch extension) then use a vacuum fill too to fill with new coolant.
Answering "Where is engine coolant drain plug for a 1.8 Nissan sentra engine?"
Should be a plastic key shaped thing. bottom of tank, corner, engine side.
That is always a messy job at best. If you don't drain it you are going to spill radiator fluid all over your engine when you take a hose off. It is best to drain it into a pan and then add new fluid when you are all done. You may want to flush the engine and radiator out with a cleaning agent while you are at it.