Quote:
Originally Posted by Wrenchbender Ret
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.
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Great thanks, judging by your suggestion a radiator flush may not be a bad idea either than I would assume