Black smoke and skipping - 2000 Ford F350 Super Duty Super Cab

I would say that with the grey smoke and all, your piston/s are skipping.
This means that the cylinders are worn unevenly from top to bottom.
The pistons then slightly bounce or skip in the cylinders.
Time for a rebore perhaps?

Does it have any black smoke out of the exhaust ? The ECT Engine Coolant Temp sensor may be bad.

DO YOU USE HIGH GRADE FUEL? IF NOT ANY OTHER FUEL CONTAINS ETHANOL WHICH ATTRACTS WATER/MOISTURE.

missing can be from faulty injector tips and or low fuel pressures
Low fuel pressure can be from a blocked vent pipe on the top of the fuel tank not allowing sufficient fuel through to maintain pressure to the pump.

Hello,

Have you done a service recently? If you havent, then you need to change all the standard parts...
Fuel Filter, Plugs, lead wires (probable culprit).
I assume when you said that it's skipping real bad, you meant it has a missfire. This could be caused by the lead wires so check those first.

If you have checked all of these, your head gasket or rings could be a the problem, and a big problem at such.

I hope this helps.

G

What color smoke? Black is emissions related, blue/black your burning oil and white your burning anti-freeze. With the "skip" your REF to, you probably have a bad spark plug, wire, or bad cylinder and burning some oil or coolant. CK plugs , wires & do a compression test. Pressure test Radiator for head gasket leak.

well your oil rings on your pistons are pretty much dead if its spiting black smoke for the failure of the pedal you could have a dirty air filter or almost dead fuel injectors could be spark plugs and spark plug wires to

Check the IAC, (idle air control) remove the air intake to the engine, spray brake cleaner in the intake, pay attention to the square/round hole inside the inlet, spray it with cleaner, the car will be a bit hard to start at first. let me know if it works.

sorry, but it sounds like the timing belt just broke/ skipped on you.

Black smoke is too much fuel. Bad spark plug, or plugs, bad spark plug wire or wires, bad injector, allow engine to cool, pull the spark plugs. does one look bad? Replace one or all. Plug wires don't last forever. An injector can stick open an pass too much gas :)