Posted by chuckn on September 11, 2017 at 09:06:40 from (216.220.1.146):
Hi Folks, I'm a master tech with no tractor experience . I am working on a John Deere 310D Turbo diesel . At first it had fuel flow issues and after replacing the fuel filter, cleaning the vent cap and finally deleting the return valve at the Stanadyne injection pump she starts and runs without visible areation . Idle is around 1100 RPM indicated and is smooth as is 1500 RPM and up. The problem is a misfire right at 1400 RPM . It's very choppy and rough with a bit of rolling surge. There are 4400 hours on this tractor and it is well maintained but looks to have never had valves adjusted . Has anyone ever experienced this symptom ? I am work camping at a remote isolated Ranch in Montana and need to get this thing purring before the snow flies . I have only the owners manual and forums to go by and this is the best forum i've seen.
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Today's Featured Article - Third Brush Generators - by Chris Pratt. While I love straightening sheet metal, cleaning, and painting old tractors, I use every excuse to avoid working on the on the electrics. I find the whole process sheer mystery. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. They all seem to start with a chapter entitled "Theory of Electricity". After a few paragraphs I usually close the book and go back to banging out dents. A good friend and I were recently discussing our tractor electrical systems when he stated "I figure it all comes back to applying Ohms Law". At this point
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