I am having a devil of a time with cold starts and idle settings. I realize there are only 4 adjustments, but I'm frustrated and would like some guidance. I rebuilt the stock 4160 last winter and setup/tuning in the driveway went well, but once in the water it struggles to idle unless I give it enough fuel to get the idle up above 1000 rpm. I have to warm it up to about 140* before i can put it in gear without it dieing. I can slam it in gear and goose it to get moving, but the rpm must be kept higher than normal to keep it running. When putting it in gear after its warm the rpm drop can get really low and it may die or it may be fine. Increasing the idle speed screw helps this. Then there is the choke. No idea where to set this to help. It accelerates and runs so much better after the rebuild, but the idle issues have me scratching my head, especially when its Jekyll and Hyde between the driveway and the lake. I think I should start over with initial settings. Any help?

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