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Do you happen to know where the coolant bleeder valve is on a 1986 corvette?
The early C4s don't have a bleeder valve...You have to use a method called " Burping the system" there are threads on doing this if you do a search in the archives....Below is what I use for all my vehicles including my 89 Corvette.. This makes filling your cooling system a 10 minite job, because your not allowing any air in the system from the start.......WW