1985 Chrysler 5th Avenue need some torque

Are you still having problems with your wonderful 5th Ave.I used to omn a car just like that one, it was a Diplomat. Have you fixed it yet? If you still need a question answered about it let me know.
Spark advance, exhaust restriction and even loose timing chains were a big problem on them, but fuel system metering circuit problems although not as common, did play another role in better performance on light rather than heavy acceleration. Good luck.

Hello. You say that after the blue smoke gets burned off, it runs ok, lean if anything but it just doesn't have the power it used to. Am I correct?
Now I want to ask you something. What kind of work has been done to the engine itself, that you know about? Does it still have a catalytic converter? How long have you owned the car? You need to let me know, and I will let you know what I think, although, I am already certain of the things it already needs just from your description, I would want to know that the transmission is starting out in 1st and upshifting and downshifting ok also. Overnight a car sits and it cools off. Thats referred to as a "cold soak". During that time, the oil thats sitting in the top of the cylinder heads is leaking down into the combustion chambers past the stem seals on the exhaust and intake valves. So when you start it, the engine is loaded up with too much oil. Until it burns off, 4 minutes or so right, the chugging tells you how bad the oil mix is causing your engine to run, and the blue smoke means its oil. So if you have a catalytic converter, even fairly new, its real bad for it. I am very glad you are getting good gas mileage but unfortunately that is not a good thing for power(torgue). My car wasn't very good on gas mileage, it had no reverse but I didn't even fix it for 3 years. I just sort of parked in a proper fashion. And at that time all I mostly was working with was transmissions. So let me know those things I asked about and I'll tell you what I would do. Can you get around ok with it like it is or is it now or becoming undriveable? Let me know. My pleasure. Later, Joe

Now I will give you the proper advice in my own small yet profound experiences with such matters. If it was a hand-me-down from your Father-in-law, tell your wife how much you love and cherish her way more than your car but also tell her about your appreciation for the car her father handed down to you.
It needs many, many things to get it to run good again. Keep it oiled and watch the cooling system. Keep on getting around and living until it becomes impossible. Then buy yourself a nice, newer car. Something with room, power, and more economical to drive. I am happy you have relied on a Chrysler product, and if it does completely fail, make a decision then, whether to put money in it, (thousands) or put that money into something of more value to you in your life. And at least you'll always have a place to go online for asking specific car questions and getting specific car answers. Thank the 2 car pros for that.
This website was their brainstorm.
No need to thank me as I was thought of and made by the same great manufacturer as you. Good luck, and thank-you. Joe