Cold start symptoms: As originally installed from the rebuilder, on the '89, marks aligned, barely start unaided in heated garage (50deg.F). If it sat outside and got cold, no prayer of starting it without block heater. With block heat it would start promptly with no missing. In both cases the engine had to be red hot before the white haze would go away. When I learned advancing the timing would make the smoke go away, (and start better) I began to wonder about the cam ring. The drive shaft is keyed to the gear, the plunger shaft is screwdriver-slotted to the drive shaft... there's nothing between these 3 pieces that can be mis-adjusted.The only other thing that moves is the cam ring. I should also point out that this problem existed from day one. The pump was installed in cold weather, and has never had a decent cold start since. I kind of don't think it's drain-back, once it starts it never dies or misses. At one point I swapped pump covers with a known good pump, thinking it might be the cold advance components. No change.
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Today's Featured Article - Earthmaster Project Progress Just a little update on my Earthmaster......it's back from the dead! I pulled the head, and soaked the stuck valves with mystery oil overnight, re-installed the head, and bingo, the compression returned. But alas, my carb foiled me again, it would fire a second then flood out. After numerous dead ends for a replacement carb, I went to work fixing mine.I soldered new floats on the float arm, they came from an old motorcycle carb, replaced the packing on the throttle shaft with o-rings, cut new ga
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