Air in the heater core? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

alans94 · 10-27-2010, 04:25 PM

Ok I def have some air trapped in the heater core how do i get it out?

Thanks
Alan

piecesparts · 10-27-2010, 06:03 PM

You can sweep the air out with a good flow through the core. Most shops are now using a vacuum to evacuate the cooling system and then filling it from open jugs with a suction tube. This is necessary for many of the newer vehicles to get the water to thehigh points.
Especially since the radiator is lower than the engine.

scotts62 · 10-28-2010, 07:24 AM

Could put the truck on ramps which will put your radiator higher, ive had to do that on a couple side job cars i did because they were such a pain to get the air out

BigBlocksRule · 10-28-2010, 08:28 AM

^ that'll do it, same as air trapped under the thermostat.

10-27-2010, 04:25 PM	#1
alans94 Registered User Join Date: Jun 2010 Location: Toronto, Ontario Posts: 9	Air in the heater core? Ok I def have some air trapped in the heater core how do i get it out? Thanks Alan

10-27-2010, 06:03 PM	#2
piecesparts Parts and more parts Join Date: Nov 2003 Location: Lebo, Kansas (middle of nowhere Posts: 6,821	Re: Air in the heater core? You can sweep the air out with a good flow through the core. Most shops are now using a vacuum to evacuate the cooling system and then filling it from open jugs with a suction tube. This is necessary for many of the newer vehicles to get the water to thehigh points. Especially since the radiator is lower than the engine. __________________ Frank

10-28-2010, 07:24 AM	#3
scotts62 One day... Join Date: Apr 2008 Location: Tuttle, Ok Posts: 9,243	Re: Air in the heater core? Could put the truck on ramps which will put your radiator higher, ive had to do that on a couple side job cars i did because they were such a pain to get the air out __________________ Scott 93 crew cab build Project 62

10-28-2010, 08:28 AM	#4
BigBlocksRule Registered User Join Date: Jun 2008 Location: Lubbock, TX Posts: 2,047	Re: Air in the heater core? ^ that'll do it, same as air trapped under the thermostat.



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