1st thing i checked for leaks and found none.. second i changed my thermostat and filled up radiator tank with new fluid..i drive for a couple miles then car starts to overheat..i get home and let it sit overnite and this morning i check and there no more fluid in the radiator tank..i am mechanically challenged.. so im asking you guys at ht what do u think the problem is... or like where my fluid is going

 

check your oil....is there too much?

no leaks?

when you fill the cooling sytem do the following:

fill up the radiator
open bleeder valve on top of t-stat housing
start the car and fill the rad until no more air bublbes come out of the bleeder valve
close the bleeder valve
cap the radiator
fill overflow tank

drive car to get it up to operating temp and then park it. let it cool down and add coolant as needed to overflow tank

 

well a 79 accord with 750,515 miles could have lots of places to leak coolant; add that to the fact you are running the original T-belt water pump and Thermostat stuf happens

Is there white smoke from the exhaust on start up? or is that a secret too?