JohnnyHville
Member
Recap from part 1: '46 2N suddenly began overheating an spilling over coolant upon warm up. Only to settle itself if turned off and let to sit a couple of minutes.
- Original suspect was sticky t-stat due to BarsLeak. System drained and refilled, tractor allowed to run at temp for a while. All info available says this should of cleared BarsLeak. And new other discovery allows for questioning of sticky t-stat issue, but still not cleared.
- Others suspected tstat in backwards. But we had already cleared that potential due to 9-12 months of perfect performance and still have notes from original installation. Plus, I can feel through the hose by squishing it. Confident that's not issue.
Ok, finally had a very short window of opportunity this weekend to take another gander at this overheating issue. Usually, because of time constraints and ADD, I go do other things while I let her settle. This time I stayed and paid close attention. It was very cold Sat morning, the temp gauge never got past 160 before she overspilled - caught me off guard this time. But, that may be due to the exposed metal adapter the temp gauge lead goes into giving a false reading due to low ambient air temp and being delayed in catching up to engine temp.
Immediately after shut off, there was quite a bit of gurgling and burping down in the block, and I could see air belching up into the radiator (suspect that's when the t-stat opened). On occasion, a good hard burp would spray out coolant. Kind of reminded me of my younger days after a night of hard beer drinking. She shows no sign of water vapor in exhaust on start up. Once she finished her unlady-like event, all was well.
Ideas?
- Original suspect was sticky t-stat due to BarsLeak. System drained and refilled, tractor allowed to run at temp for a while. All info available says this should of cleared BarsLeak. And new other discovery allows for questioning of sticky t-stat issue, but still not cleared.
- Others suspected tstat in backwards. But we had already cleared that potential due to 9-12 months of perfect performance and still have notes from original installation. Plus, I can feel through the hose by squishing it. Confident that's not issue.
Ok, finally had a very short window of opportunity this weekend to take another gander at this overheating issue. Usually, because of time constraints and ADD, I go do other things while I let her settle. This time I stayed and paid close attention. It was very cold Sat morning, the temp gauge never got past 160 before she overspilled - caught me off guard this time. But, that may be due to the exposed metal adapter the temp gauge lead goes into giving a false reading due to low ambient air temp and being delayed in catching up to engine temp.
Immediately after shut off, there was quite a bit of gurgling and burping down in the block, and I could see air belching up into the radiator (suspect that's when the t-stat opened). On occasion, a good hard burp would spray out coolant. Kind of reminded me of my younger days after a night of hard beer drinking. She shows no sign of water vapor in exhaust on start up. Once she finished her unlady-like event, all was well.
Ideas?