92 460 stumbles under load.
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92 460 stumbles under load.
Bought a somewhat rigged around 92 F250 w/460 auto E4OD, previously it was idling rough but had plenty of power pedal to the floor. In order to solve idle issue, I shotgunned several tune up parts; cap/rotor,wires, plugs, air filter, fuel filter, new coil, egr position sensor and map sensor since i noticed it was running egr codes and the previous had replaced the egr itself. Then I wanted to ensure previous owner hadnt messed with tkming which he did. I pulled spout and set timing to 10 btdc, and moved it to 12 because it seems it ran worse at 10. Now it idles smooth and runs great up to 45 mph or anything half throttle, but when its floored stumbles and eventually starts to pop if held. I suspect fuel pump as the previous owner threw in a regulator, but wanted some more experienced thoughts. My thinking is he may have threw in a cheap or inadequate rear pump if at all since he was using it alone. When I bought it the front tank was removed and in bed. I am also considering just buying a new IAC. I told my self id never buy another Ford EFI, but here we go again. Please help. Thanks
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