Hey, guys, I’m new here and I’m having a lot of engine troubles with my 1990 F250 with the EFI 460 and e4od trans, which I bought little over a year ago and haven’t driven it much due to running poorly. Just wondering if anyone has run into this problem.


Symptoms:

Running really rich (extremely bad gas mileage, heavy unburnt fuel smell for exhaust)

Runs almost like its missing on one or two cylinders (seems to clear up at high rpms)

Really bad engine shakes under load at low rpms


New Parts:

Cap and Rotor, spark plugs and wires, map sensor, tps sensor, iac value, ignition control module, new intake gasket, ecu, ignition pickup, ignition coil, o2 sensor, intake air temperature sensor, coolant temperature sensor, new pcv valve, new vacuum lines, fuel filter and air filter, cleaned injectors, new battery cables



I have checked all vacuum ports and intake gaskets using smoke and carb cleaner. I also checked all fuel injectors with a mechanics stethoscope to make sure their pulsating when the engine is running. No engine codes both KOER and KOEO except for the EGR code since I have removed it and blocked off the port on the intake. I have checked the fuel pressure in the rails, and they are in specs. Checked the cat to make sure it wasn’t clogged. Checked compression and that’s good, clean most of the connectors and grounds. They're probably a few other things that I tested but forgot.

If you guys have any thoughts or recommendations that would be great it, if not my last resort is converting it to carb.