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post #4 of Old 05-21-2010
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I had a commercial salmon troller with a Detroit Diesel, aka "Jimmie", used to troll for hours on end with no problems. Lots of theories on this issue but I think as long as the engine is run hard after trolling it should be OK. lots of commercial boats with 2 and 4 stroke diesels out there doing the same thing for many years. Perhaps your idle speed is set too high if you are going too fast?

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