Nobody has asked if your 4000 is a four cylinder, 3 cylinder Different key switch / solenoid setup. If it's a 3 cylinder you'll need to know if it has the original Ford GAS key switch, or if somebody had replaced it with the aftermarket "universal" switch which is based on the DIESEL key switch. The best manuals are the reprints of the factory manuals both of which are available on this site. Checked my 3 cylinder manual (here) compression at cranking speed (200 rpm) with all plugs out, throttle wide open should be 115 to 150 with no more than 25 psi difference between cylinders. Have to go out to the farm and dig out the 4 cyl manual.
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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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