How do you flush the coolant?
Take it to dealer and hope they do it correctly, There is a plug on bottom of radiator loosen and it drains coolant out of radiator, but not out of engine, There are plugs on the side of the engine block that have to be removed to drain coolant out of block. Probably impossible to get to and accidents happen, sorry I hope this helps some.
Where on the engine block of a 1987 Nissan maxima are the coolant system drain plugs and after you flush the system do the drain plugs have to be replaced?
Drain and properly dispose (recycle) the old coolant. Put one bottle of Radiator Flush(from am auto parts store)in the radiator and refill with water. Run the car a idle(leave the heater ON to flush the heater core)for approx. 5 minutes. Drain and properly dispose of the flush liquid. Refill radiator with 50/50 mix of coolant and water or all premixed coolant.
01 Malibu 31 replaced thermostat no leaks anywhere except out of overflow did compression test on all cylinders all good and no oil in coolant and no coolant in oil but still overheats then cools?
radiator core could be plugged, cap on the coolant reservoir is not maintaining proper pressure. is water pump working properly!! I would flush system and see if this works, buy a good radiator flush at any auto parts place. you can flush the radiator by adding flush to coolant tank, then put a garden hose in tank and back flush it. as long as you have a new thermostat in, you do not need to…
drain all coolant from system. flush with water until clean water is comming out of engine. fill rad with water and run engine up to temp. this should help remove the antifreeze from the engine. drain water out and run water through system again until clean. add new coolant to system. should be good. use garden hose to flush out system