Posted by Berk1 on January 26, 2012 at 12:24:40 from (75.105.90.198):
I have an IH 674 diesel. Couple months ago, I was losing oil pressure. Oil level was going UP, so I had the fuel injection pump seal replaced. Now, maybe 10 hours later, I am again losing oil pressure, but the oil level is staying steady. The tractor starts fine, oil pressure immediately starts up fine, goes up to about half on the mechanical guage, but once it warms up it starts a slow, steady drop to almost nothing. If I shut it down and let it cool off, it starts back out at normal pressure again,then drops. I also noticed a new oil leak from the smaller plate (4X6") in front of the large oil pan plate on the bottom of the tractor at the same time this problem started. The leak isn't much, maybe a teaspoon to a tablespoon a day? Could these two things be related? Is this an oil pump problem? I am in WI, using Rotella 15W40, and an engine block heater.
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Today's Featured Article - Tuning-Up Your Tractor: Plugs & Compression Testing - by Curtis Von Fange. The engine seems to run rough. In the exhaust you can hear an occasion 'poofing' sound like somethings not firing on all cylinders. Under loaded conditions the tractor seems to lack power and it belches black smoke out of the exhaust. For some reason it just doesn't want to start up without cranking and cranking the starter. All these conditions can be signals that your unit is in need of a tune up. Ok, so what is involved in a tune up? You say, swap plugs and file the points....now tha
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