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Mod | | | Forums66 Topics128,049 Posts1,055,741 Members48,426 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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| | | Joined: Mar 2006 Posts: 262 Shop Shark | | Shop Shark Joined: Mar 2006 Posts: 262 | Decided to take the '49 out yesterday for one last spin. I installed a regulator valve for the fresh air heater a while back and noticed yesterday that the heater never really blew out warm air. Just cool air no matter where I turned the knob on the valve. Did I do something wrong on the install? Hoping someone might have an idea. Thanks
My truck: She may not be the prettiest girl at the dance, but she's all mine!
| | | | | Joined: Jan 2009 Posts: 1,644 Shop Shark | | Shop Shark Joined: Jan 2009 Posts: 1,644 | Could it be air locked? somtimes there is some air in the heater and the coolent will not push it out because the air compesses and the coolent will not move , the best way to get the last of the air out is to loosen the return line the lower one coming from the heater a little and let the engine run the air pocket sould come right out and the hoses should start getting hot .
Pete | | | | | Joined: Mar 2006 Posts: 262 Shop Shark | | Shop Shark Joined: Mar 2006 Posts: 262 | Thanks, Pete. I'm going to give that a try in a little bit.
My truck: She may not be the prettiest girl at the dance, but she's all mine!
| | | | | Joined: Mar 2006 Posts: 262 Shop Shark | | Shop Shark Joined: Mar 2006 Posts: 262 | I tried Pete's idea. Between that and adding about a quart of anti-freeze I now have heat. Thanks for the help.
My truck: She may not be the prettiest girl at the dance, but she's all mine!
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