Posted by Ford45 on July 21, 2016 at 20:12:23 from (76.2.177.85):
I'm working on a ford 861 that has set for 20 years. I've replaced the fuel tank and line with new ones, cleaned the carb and put in a carb kit. Replaced the coil, distributor cap and bug, points and condenser, and the plug wires. I've checked the static ignition timing. I've adjusted the valves with the engine running according to the book. I've replaced the manifold gaskets. I have not checked the compression but when the tractor is cranked it acts like there is a lot. The engine doesn't have many hours on it. It is still a 6 volt positive ground.
Ok now the problem, the tractor is horrible to start, even when pulled and could also run better. Once started it has descent power and will idle smoothly as low as 300 (I have it set at 550). If the throttle is opened to fast it will die or drop to two cylinders. The same thing happens if two big a load is put on it. When it starts it often starts on two cylinders. I can adjust the carb until it sounds lean or spits out black smoke or anywhere in between and the same thing happens. The spark will jump a 1/4 inch gap but is yellow. I have never worked on a 6 volt tractor before but it cranks slower than other engines I've worked with. It also seems to use a lot of fuel for an engine of its size.
This tractor has been in the family for almost its entire life and has never started good,Is that just the nature of a 861? Its sibling a 641 has always started almost instantly.
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