Suggestions on "bleeding" (archive)

Hi - Question may sound stupid - but after replacing radiator and refilling coolant, I know the cooling system needs to be bled. Does this refer to the small screw on top of thermostat housing? Job was started by friend and left for me to finish. Any help would be greatly appreciated.
Thanks in advance
Laurie
1978 US 733i 4spd
1980 Euro 735i 5spd.

Yes, open the "bleeder screw" on top of the thermostat cover. I then add fluid slowly to the system. If you take your time pouring the coolant in most of the air will remove itself during this process. Then finger tighten the bleeder screw and start the car. Be sure to turn the heat on so fluid will flow through the heater core. While you are starting up carefully monitor the temperature gague. While the engine is idling open the bleeder screw just enough so that fluid trickles out. Be careful not to remove the screw from the housing and don't get your hand or wrench in the fan! Keep after this until the engine has reached normal temperature (180 degrees F.) and keep opening and closing the bleeder screw until you are sure that all the air has been removed. Remember to monitor the temp gauge to be sure you do not overhead during the process. I have found that if I did a good job of pouring the coolant in before starting there is very little air to bleed out after starting up.

Follow Ups:

Re: Suggestions on "bleeding" Laurie 14:33 4/21/2001 (0)

[ Follow Ups ] [ 7-series (E23) Message Board ] [ Msg. Board FAQ ]

Questions, comments, or problems, please visit the Roadfly help desk.