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| had a 1680 a few years ago did the same thing. replaced the electric lift pump on the side of the machine and it went away. didn't make sense then but after pulling my hair out adjusting everything else, called case and they put a fuel pressure gauge on and the pump was only about 25% didn't make sense why it did it under no load cause you figure it didn't need as much fuel but the new pump fixed it | |
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2188 engine surging
