I just got back from a few day road trip, haven't checked my motometer. When you get the infrared, got mine at Horrible Freight, it registers several degrees off but is still the best tools for diagnostics. Water in radiator will be coldest at right side bottom as it goes toward water pump. Will be hottest at top where it comes back from engine. Check other areas to see if they are cold, signifying a block radiator because of no flow. Also check each cylinder on the side of the block, exhaust, head, etc.
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