I took it to Cat this winter for a tuneup. It has always sounded like one cylinder hit a little harder than the rest at idle. The 3116 is totally mechanical setup. All the injectors need to be synchronized. I figured one was out of whack. I talked to the tech that was going to work on it and asked him if there was anything we could do in the horsepower dept. He told me there is an adjustment for max fuel that could be tweaked some, but it is still just a little engine so don't expect a world of difference.
I'm not sure how much I gained, but it's noticable. Maybe 15 or 20... I had never seen that truck make black smoke before. Now I get a nice puff when I get on the throttle so I know it's getting all the fuel it can burn and then a bit. It's still no speed demon, but I don't think there's a lot more you can do to those motors without spending some serious cash.
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Today's Featured Article - History of the Nuffield Tractor - by Anthony West. The Nuffield tractor story started in early 1945. The British government still reeling from the effects of the war on the economy, approached the Nuffield organization to see if they would design and build an "ALL NEW" British built wheeled tractor, suitable for both British and world farming.
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