Topic: Smokes When I start it up cold???

[haulincats]

I have a 98 TJ 4 cylinder with about 130,000 miles.
When I start it up in the morning or after setting for
a few hours, it smokes for a second or two. It smells
like oil. What is wrong, is there any easy fix?
Thanks,
Vance

[95four]

If it only does it after sitting awhile I'd guess valve stem seals.Not that bad of a job.

[haulincats]

If it only does it after sitting awhile I'd guess valve stem seals.Not that bad of a job.

Anyone know where there is a write up on how to do it?
Thanks,
Vance

[sharpxmen]

Anyone know where there is a write up on how to do it?
Thanks,
Vance

that's a fair guess but i would also look for oil in the airbox

[dwtaylorpdx]

Look up changeing valve springs in a good service manual. its the same job....
While your at it put in new springs... It will help the engine run at the top end.

Dave

[aka-justin]

Leaking valve stem seals cause oil burn off when you first start your engine after a while of not running.  I would check the compression too.  Nothing to really worry about unless it burns oil all the time.  Stepping up the weight of oil a notch may help. 10-30 to 10-40 or 15-40.

What happens is the oil is squirted up into the valve cover to lubricate the valves and rockers while you drive.  If the valve stems seal is worn, it runs down the shaft and into the cyclinder where it is burned off at next start up.





If you get a new set a valves and had the cyclinder heads rebuilt, it would cure it for sure, but it may not be worth it if your compression is good and what not.

I would take it too a mechanic for a recommendation.  My father-in-law (mechanic) drove with leaking valve stems fora decade in his old 1970 c10 with no ill effects.