Posted by NNP on November 06, 2014 at 04:41:56 from (66.66.112.196):
In Reply to: Overheating H posted by Redturbo on November 02, 2014 at 20:22:27:
lots of good suggestions.
working with an unknown radiator, couple of quick tests I do.
bottom hose off, garden hose on full flow stuck in the radiator neck. Draining thru the radiator should stay ahead of the hose flow easily.
plug the inlet/outlet of the radiator. Fill and then drain it into a bucket and see how much it holds.
I take the thermostat out temporarily when flushing/cleaning a nasty one. I want to actually see the return flow to the radiator when it's running. Should be very violent.
(and especially nasty ones, I might leave the thermostat out for a few days when all that junk coming loose is still circulating. They will get plugged)
Once done, on to the engine.
lean is hot,
but the most common hot problem I see is a stuck or malfunctioning advance mechanism.
If it is stuck/sticking, no advance when rpms come up and a very, very hot engine, exhaust side, will result.
(they sound 'louder' and the exhaust components will be white and crackling hot when this is the case)
A small combustion leak into the water jacket will get that temp climbing too.
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