1983 6.2L Black smoke at low rpm and load

[campfire]

So I ended up still having too much black smoke on the highway. I pulled the cruise control actuator and throttle cable bracket to access the small cover on the driver side of the pump. I made the wife bar over the engine to line up the adjustment screw and I turned it down roughly 1/6 of a turn or so. I bypassed the egr and turned the idle down a quarter turn and the high Idle solenoid up until it was doing something. I test drove it and now just a slight black haze while accelerating on the highway and going up hills.

So...all happy now?

 

[campfire]

There are specs for what speed the idle speeds should be (IIRC it's 585RPM and 800RPM, but your emissions sticker should tell you).

 

[Truckman4life]

There are specs for what speed the idle speeds should be (IIRC it's 585RPM and 800RPM, but your emissions sticker should tell you).

Yeah I don't have a tach or a diesel timing light/tach so I just go with whatever "sounds" right to me. It works. Yes I am happy for now with how it runs. I'll see how it is over the next few weeks to see if it needs any more tweaks.