David R Inman
Member
I've posted before about my Dads WD that will overheat (boiling coolant) at an idle, with water and antifreeze for somewhere around 25-32 degrees (He's in Phoenix, Az).
Previously we changed the water pump and got a good clean radiator and where running no thermostat, that was of no help.
So last week he did a compression test and found number one at 50, and the rest well in excess of 100. He tore into it and found that the sleeve has been scored by the wrist pin, which we know means it was installed wrong. After pulling the sleeve, he found a good bit of sand/crud around the lower seal, so we may have some circulation issues.
He told me he thinks he recalls that one cylinder being low on compression can cause overheating, but he is not positive.
Can anyone confirm this, and for my own education try to explain it if it is true?
Previously we changed the water pump and got a good clean radiator and where running no thermostat, that was of no help.
So last week he did a compression test and found number one at 50, and the rest well in excess of 100. He tore into it and found that the sleeve has been scored by the wrist pin, which we know means it was installed wrong. After pulling the sleeve, he found a good bit of sand/crud around the lower seal, so we may have some circulation issues.
He told me he thinks he recalls that one cylinder being low on compression can cause overheating, but he is not positive.
Can anyone confirm this, and for my own education try to explain it if it is true?
