Help 300d 2.5
 

1992 300d 2.5
Help Guys, Saturday morning temp 9 degrees. before leaving for work cranked the old girl up to let her warm for about 15 mins, left the house for work got about 3 miles and she stated to slow down on me, I hold the peddle to the floor, black smoke rolling out the pipe, after several minutes it is running better but not great we limp back home and I take the 82 300d to work no problem. last nite at about 20 degrees I think I will see if I still have a problem took a drive at about 17 miles same thing happens slows downs billowing black smoke out the pipe, limped home. Anyone have any idea whats going on .......Many thanks Norm

When was the last time you changed the fuel filters or air filter etc?

Air.
 

"Billowing black smoke" would lead me to believe that, for some reason, the engine is starved for air. Iced-over air filter element? Can you bring the car inside and let it thaw out a bit?

Jay.

Billowing black smoke sounds like it's getting good fuel flow.

I bet it's on the intake side. Either restricted intake at some point, or a malfunctioning EDS or EGR system.

I would definitely check the air filter first.

Interesting problem. Never heard of this before.

fuel gelling?

Let us know what you find out.