Scotty,i have a Ford Econoline E-350 automatic , the exhausts makes allot of black smoke when its idle or worse when i press on the gas immediately its makes allot of smoke, i changed the injectors and the ignition coils but its still puts allot of black smoke and now my engine is shaking every 2 seconds and my rpm goes to 2000 to 750 when idle, what do i do? (please do a video about it) Thank you.
You didn't say what year it is. It could be worn out piston rings or bad valves. Get a compression test. Were the new injectors OEM or after market? What engine is it?
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