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hey guys i got a problem my car is burnin oil i have to re fill my oil once in a awhile and my friends say when i shift black smoke comes out any ideas what the prob is and how much it will cost?

Maybe oil pressure switch? Can you find a leak anywhere?<p>[ May 05, 2003: Message edited by: Bri94GS ]</p>

could be your val. seals.

no leak

what kind of oil are you using?

Rings for sure, I'm assuming you got a tons of miles on it, borrow a compression tester and see how much of a variance you get between cylinders.

black smoke on shift is rich fuel, blue smoke on decel is valve seals

yeah when you burn oil the smoke is blue not black

Burning some oil is normal for an older car. I burn about a quart between oil changes. Just check it on a regular basis and keep it topped off.

hey thanks 4 all the advice i use qauker state highmilake and i got 160,000 kms which is pretty low.

was it burning before you switched to the high mileage oil? What are you running? 5w30? 10w30?

So your saying 160,000 kms is low, but your using High Mileage motor oil.<p>A good sign of woren rings is when you pull out from a stop and you let out a puff of smoke.

10w30

Yea, i'd agree...i think it's the rings as well...maybe try some engine treatment and running 5w30? If that doesn't work, bring it somewhere to get the rings checked

I would first eliminate the areas were oil leaks are most likely.
1) valve covers
2)oil filter
3)oil pan gasket and oil drain plug
4)oil pressure switch
most of these leaks are small enough that they won't leave a puddle and/or are burned off by the motor.<p> black smoke is not oil burning but unburned fuel.
It can also be a sign of a clogged catylitic conv.<p> if its a leak, find it and fix it. if its not then keep a close eye on your oil level and always have a quart or two in the car.
I wouldn't waste your money on a ring job or valve job. drive it till it drops. then put a 2.5L in.
Andy P. 93 GS