|
Steve: I've seen this rapid movement in an oil pressure gauge when the entire tube to the gauge is filled with oil. Normally there is small amount of air trapped in the top portion of the line, and this cushions the movement and dampens the direct pulsations caused when the oil pump is being driven by an uneven motion. You can try removing the line from the gauge and the port where it connects near the governocr case, blowing it clear and trying again. It might help, but if the coil in the gauge is filled with oil, it might cointinue to be over-sensitive. As to the rough running, you pretty much replaced any component that could affect it on the ignition side, so as was suggested, after you guarantee good flow from the sediment bowl to the carb bowl (I normally open the main drain cock first and if fuel flows freely in a pencil sized stream for at least thirty seconds), then you probably have an occlusion in the idle circuit. If a little bit of choke seems to smooth it out, that's pretty much a direct indication that you have some dirt in the idle side. If you take it apart, be sure to pull the center nozzle and clean the rust and dirt that is normally present there after 50+ years. Watch for rust flakes, a wheat straw, or a bird feather in the fuel tank. They can float over the bottom opening of the tank and cause an engine to run with fits and starts one time, and then run fine the next. Frank
|
