Posted by UP Oliver on June 07, 2016 at 12:27:12 from (68.70.134.87):
I have a David Brown 990. It was working fine until late last fall when my wife was brushcutting, I was putting metal on the pole barn and could hear the tractor start to labor out in the field. I have more exhaust than usual, and a lack of power. It sounds like it is missing, but I am no expert on what that sounds like. Also, it misfires when I throttle up.
I have replaced the fuel filters, disconnected the air filter for a quick check there, I have used the dope (as one guy I know calls it), Diesel 911, Diesel mechanic in a bottle and Seafoam. I don't see any leaks anywhere in the fuel lines. It still runs poorly.
I don't know what the next step should be. My manual says to bleed the fuel system for misfires among other things. When I have bled the system in the past, once I get it running there has never been any problems like this so I doubt that is the problem? Wouldn't mind some advice on that.
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Today's Featured Article - The Day Mom Drove the 8N - by Brian Browning. My Dad was wanting to put in a garden but couldn't operate the 8N and handle the old horse drawn plow he had found and rigged up to use with the tractor. Well, he decided to go get Mom out of the house and have her drive the tractor while he walked behind the plow. You got to understand that while my Mom is a hard worker who will always help whenever she can... she had never operated farm machinery before that day. Dad got her out there, explained how the clutch was the same as in our o
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