I've got a 94 ranger which came originally with a 4 cyl engine. The previous owner swapped in a V6 but I have no idea what year it came from. Unfortunately the engine has bad rings or something related as it blows out black smoke after a few minutes at idle. I found a complete V6 4.0 out of a 97 ranger minus A/C 3 hours away from me. Would this be a straightforward swap?

 

black smoke means to rich of a mixture. the engine is fine. you have to find whats making it run so rich....

 

you need to lean your engine out

 

My mustang runs rich and it gets on my bumper. This is A LOT of black thick smoke, where you can't see out through the windows if you're inside the cab

 

How would I lean out the engine?