Posted by Wolf_Morgan on September 21, 2015 at 13:18:14 from (66.242.67.110):
I am new to the forum and find the information in the posts fascinating. There are a lot of wise and smart people on here and I myself am a newbie so here it goes. I just purchased a 1950 John Deere Model A. It was low on coolant so I added a 50/50 mix until full. I fired the beast up and immediately realized I had a radiator leak. So, I put in two cans of JB Radiator stop leak and she sealed up. I hooked up a three bottom plow on sandy soil and it pulled it like a champ. My operating temperature gauge was not indexed , but sat towards the top of the green. This continued for about an acres time when I noticed my radiator had started leaking. I added about a gallon of water per 30 min and continued working. I noticed a slow decline in power and temperature as well as the day went on until I was in first gear and starting to struggle. My operating temp was barely in the green. I had completed about 3 acres and thought I would check it out in the morning when I had good light.
I fired it up the next morning in which it sounded like a champ but could not pull the plow. I parked it and came back a week later with some ideas. First, I cleaned the air filter in which the oil was creamy. Second, I put in new plugs and checked both plugs for good spark of which it was great. Third,I added about 3/4 a quart of 30 weight oil as it was down that much. Fourth, I added about 4 gallons of water as it had lost that much in the week and fired it up. She ran great but would barely get into the green of the temperature gauge. I added two more cans of JB and crossed my fingers as in the directions it said it works better when running at normal operating temperature. The leak in the radiator did not seal and I could not see any other visible signs of leaking elsewhere. I thought maybe, if I put a light load on it I could get the operating temp up and the JB might work...No power, at least not enough to pull the plow (2" deep) and get the operating temperature up.
My question, is the radiator and hence the operating temperature that crucial in HP performance? I ask only because if that could be the only problem, I can justify spending the $375 on a new core. Thank you for any and all feed back.
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