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- - Heater core not filling (https://67-72chevytrucks.com/vboard/showthread.php?t=688476)

OlSmokey

11-13-2015 04:11 PM

Heater core not filling

Hey there, i'm trying to refill my coolant system, and it I put the coolant in the radiator, and i keep checking the hoses going to the heater core and it's not filling. the radiator is completely full and i can put no more in. but it still won't go to the heater. i know it's not clogged, any suggestions?

EARNHARDT#3

11-13-2015 04:13 PM

Re: Heater core not filling

Start it up and let it circulate.

Valarius_Starchaser

11-13-2015 04:15 PM

Re: Heater core not filling

Quote:

Originally Posted by EARNHARDT#3 (Post 7375269)

Start it up and let it circulate.

x2 air is stuck in there start it up with the radiator cap off and fill as it lowers

GASoline71

11-13-2015 04:29 PM

Re: Heater core not filling

Yup... can't fill it without the engine warmed up so the thermostat opens. The only way coolant gets to the heater core is when the water pump is circulating water.

Gary

OlSmokey

11-13-2015 04:32 PM

Re: Heater core not filling

okay will do thanks guys!

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