I have a 87 190d 2.5 i need to know how to adjust the fuel pressure? the car is dump smoke out at idle and driving. it is not using oil. i do not loose more than a quart every 3000 miles. with 208k miles it runs great but the smoke makes me feel like i am in a james bond moive. thanks steve

 

Sounds like dirty fuel injectors. There are plenty of posts related to cleaning them.....