Posted by wellssc2002 on July 30, 2018 at 19:15:27 from (71.64.206.142):
I lost the message, so an update to the following post is at bottom:
"My 1961 Ford 861 Powermaster began running very rough a while back, particularly when the engine was cold. I purchased a rebuild kit for the carburetor, a Marvel Schebler TSX 813. After everything was put back together, the best I could get it to do was fire up and run for 2 to 3 seconds with revving and some backfiring before shutting down, and this only after much cranking. Both the idle jet and main jet were one full turn from the bottom, plus some further adjustments to try to get it to run. I disassembled the carburetor again and noted that the new float pin was longer than the original, resulting in the float resting at a slightly greater distance than the normal position of parallel to the carburetor body when held upside down. That would result in the bowl never quite filling, right? I considered using the old float pin with the new float seat, but it didn�t fit as tightly into the seat, wallowing a slight bit side to side. Using the old float seat was not an option, it was all but destroyed during the rebuild. I adjusted the float so that it rested parallel with the carburetor body, reassembled the carburetor, and remounted it. Now it does fire up smoother, but it takes a good bit of cranking. It doesn�t rev as much, now runs for around 3 to 7 seconds, but still won�t stay running. Any advice would be greatly appreciated."
UPDATE: She's running. Based on a picture a forum member sent me of an MS carb manual, I was able to find the same manual online. I completely tore the carb apart, making sure that everything was clean. On the original teardown I tried every trick I knew to remove the main nozzle, but it was so stuck that I had to drill it out. Because of that and the fact that I was working originally off of online images, I was unaware that a small gasket went under the main nozzle. With the carb reassembled and mounted, she ran a little better, but still wouldn�t run under load.
I replaced the coil, points and condenser, as well as a few other small ignition parts, and cleaned the plugs. She fired up and seems to be running well.
Thank you all very much for the help and advice. Scott
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