Posted by Deutz Lover on September 03, 2015 at 10:01:47 from (70.193.130.50):
I was looking at an advertized Dexta and the owner said the engine just seized while he was driving it. I went to the YT site and typed in seized engine and there were a lot of old posts concerning this in all tractors.
The interesting thing that is some suggested using Coke poured into the intake or on top of the piston if the head is off.
There are a number of warnings not to do this because of the sugar etc.
If Coke does work there is only one reason why I think it would.
Among the ingredients in a lot of soft drinks is phosphoric acid. If you are going to tear down an engine anyway why not use a very diluted phosphoric acid solution to do this instead of Coke?
Phosphoric acid is used in parkerizing solutions and it will dissolve or convert rust even if diluted, but it will also attack iron and steel base metal if left on. I would think it might be used to free up a seized piston where rust on the rings or rust above or below the piston might seize it, but I don't think it would work for anything else except ruining journals, piston pins, valve guides etc.
Does anyone have any further input on this?
I was originally looking for ways to do a quick field diagnosis to see if a tractor engine is salvageable without having to go farther than draining the oil or pulling the valve cover.
I did not find a specific answer to various causes for engine seizure, but I imagine if I go look at any seized tractor I would drain the oil and look for metal fragments and pull the valve cover and look at things like a dropped valve or a camshaft that is either broken or out of timing due to a broken timing gear or skipped or broken timing chain.
Does anyone else have a suggested quick field diagnosis that a person could do that would take only about an hour to save unnecessary loss of time?
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