burp your car?

[brownalizat@xxxx]

Help! Our 81 Delorean (VIN 7003) has a problem overheating. We could 
not find a leak in the cooling system so we thought that it was due 
to the cooling fan relay switch (which we replaced) we tested the car 
and it has tried to overheat again, however we are not sure if we got 
all the air out of the cooling system (thought we did) does someone 
have a method of 'burping the car' to get all the air out? Could not 
find a method on any of the Delorean web sites over the weekend. 
Although, it may be that we got all the air out because we noted that 
even after we thought we got the air out the coolant fluid was not 
moving to the radiator (the water pump and cooling hoses has been 
replaced within the last year) so could it be a bad water pump? Do 
those usually go out? We also tested the thermostat and it was 
working.....comments?

Thanks,

Aliza