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Old 11-25-2014, 05:12 PM   #14
c10noob
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Join Date: Oct 2014
Location: oakley, ca
Posts: 23
Re: How do I diagnose my heater?

Quote:
Originally Posted by Wrenchbender Ret View Post
If the rad. hose is "piping hot" your therm is probably OK. You have a circulation problem. The core is probably stopped up. Take the hoses off & wrap a towel around an air blow gun & blast a little air through the heater tubes in both directions. That will usually open it up. The inlet & outlet hoses are different sizes so it is obvious which is which.
Great thanks, judging by your suggestion a radiator flush may not be a bad idea either than I would assume
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