My JEEP smokes a lot on start up.

I touched on this subject very breifly in another post but went with the other topic. Now it is the smoking topic time. When starting my JEEP I think I could kill all bugs for a 50 mile radius. I was thinking these options: The oil journals are plugged and need to be rodded out. The timeing is off and this has something to do with it. Or there is too much oil in her. How much oil does a 231 Oddfire V6 hold anyway? My shop manual says 5 quarts but this is for a 225 OF. Is there a difference in the sump capacity? Any help would be apreachiated.

 

the book calls for about 4 1/2 quarts. i normally put 5 quarts in mine and have no problems.

 

I'm not familiar with the V6 motors, but in my experience, oil smoke at startup is usually gonna be valve seals. Then again, the wrong dipstick is not unheard of. There is more than one thread on ECJ5 about correct dipstick identification, mostly for the straight six, but it's a possibility...even if its the seals, not the end of the world.

 

smoke on start up could be rings, it will smoke until the metal get warn and starts to expand. until then oil can seep by the rings and will cause it to smoke. I do quite a bit of motor work and that usually the cause but could be something else.

 

Huntman's got a good point. I was reading somewhere how much an aluminum piston would shrink in the cold. I don't remember the specific measurement, but I was impressed. Enough to lower compression on startup an amazing amount

In any event, you can rule out timing as a problem, IIRC. I think the best thing you could hope for here is a rich condition, funky choke, maybe? Sometimes it's hard to tell the blue smoke from the black. Black smoke is usually quite a bit cheaper to correct than blue.
Black smoke = too much fuel
Blue smoke = oil control problem
If you're killing every bug for 50 miles however, it's probably oil related.

 

Noticed your up in cold country. Lots of choke on starting with short runs can dilute your oil with gas. Thin gas slips by those rings very easily causing lots of smoke. Change oil and filter and try again. What you got to lose? BTW how many miles on engine?

 

I changed the oil and filter when I changed the fuel pump this summer but it is worth a shot though. I do need choke to start her when it is cold and the short runs are not good I know. I try to get it to operating temp though. 190 is all she gets usually. As for the mileage......my guess is as good as yours. The oddometer says 45,000 and change. I don't believe it though. The old title said 43,000 before I got it though. When running the JEEP exhaust smells fine. No burning oil smell. Although I think it is a bit rich because the gasses burn the eyes a bit. Any thoughts? I will have to break out the compression gauge.