Hi Mike I agree with previous post it seems to be combustion problem. Lets begin by simplest things (just ideas) How old is the fuel in the tank ? If older than one year drain and put new fuel What is the color of the fuel Must be crystal clear or clear/light blue If it is yellow (beer like color) it is no good Disconnect air supply tube at the intake manifold start engine ..still smokin ? if not air filter is clogged. How old are the injectors ? Dripping instead of spraying injectors may cause smoking. You can bring inj to inj/repair/rebuilt shop they will check for few $ if correct you dont miss anyting... .if defective a step will be done. Be careful when reinstalling an bleeding them do not expose your skin when you loose fittings wear glove and safety glasses..to avoid high pressure fuel injection in your skin it may be very dangerous. Is it a vertical exhaust pipe ? If yes check if kids or somebody dropped strange bodies inside and/or check for exhaust system restriction..bent or squeezed pipe and .... If you find something please let us know it will be helpfull for all of us. This is not an expert advice Just few ideas Good luck !!! Joe Ferguson
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