rabjohns

I just had an oil change and now my car is smoking. Not just on start up but after 20 mins on the highway (my friend was behind me and could smell it).

I have searched the site and seen posts on TT oil filter problems causing this but can't find anything on the 993.

Does anybody know if this is also a non turbo issue or can you point me to the right section in the archive.

Cheers

David

Jeff 993TT

1st thing to check is whether the oil is overfilled.

rabjohns

Good thought but no not overfilled

Jeff 993TT

Did you check via the dipstick or the oil gauge in the car? Was the car properly warmed up and on a flat surface?

rabjohns

Checked via the oil gauge in the car. Car was properly warmed up and on a flat surface. Checked once after first noticing it (the gauge was 3/4 up), checked this morning the gauge was 1/4.

DR

rabjohns

Another good thought but no leaks and the smoke is from the exhaust.

Ray Calvo

What kind of oil did they use - super light? Thought might be 50 cent per quart garbage was used.

Also, check the level with the dipstick rather than the gauge. Your comment about it reading 3/4 one day and 1/4 the next sounds very weird unless the oil temperatures were far different and you didn't let a warm engine idle for a minute.

Is this 1/4 reading with a COLD engine? If so, I think it's overfilled. Check the dipstick when the engine is fully warmed up.

Is the oil cap on?

Steve Weiner-Rennsport Systems

David:

If I might add something here,......

The oil level gauge in a 911 should NEVER be the sole measure of proper oil level. The only way to check the correct oil level is by using the dipstick.

Check your oil level in the tank while the engine is hot, on a level surface and after idling for 3 minutes.

The oil level guage is just a Red Herring and responsible for the majority of these kinds of incidents.

rabjohns

OK I think I should have been more precise in my description (although I did say "Checked once after first noticing it (the gauge was 3/4 up), checked this morning the gauge was 1/4." not the next day).

The oil was changed at 22,513 by Midwest Eurosport (a reputable bunch) who put in Mobil 1 15-50.

Shortly after (maybe 50 Miles the gauge was at 3/4 fully warmed up on a flat surface). Today 480 miles later, at 22,993, the gauge was 1/4 full fully warmed up and flat. The dipstick supports the same story. The oil cap is on.

Does anybody have any thoughts as to what the possible causes of smoke from the exhaust might be? Could it be a loose filter?

Cheers

David

Ray Calvo

If you are truly correct on your readings, then it burned about 2 qts in under 500 miles. You have major problems. Something might have gone internally. Bring it back to the shop and b*tch.

rabjohns

Oh good. What could "major problems" mean?

Jay911

The dopes at mudwest eurosport started you car with little or without oil. Get back there quick.

Le Chef

"The oil was changed at 22,513 by Midwest Eurosport (a reputable bunch) who put in Mobil 1 15-50.

Shortly after (maybe 50 Miles the gauge was at 3/4 fully warmed up on a flat surface). "

I think you missed something Jay...

Could it be a piston ring or a weak valve spring causing this at 23,000?

Steve Weiner-Rennsport Systems

David:

No oil filter issues on the N/A 993 like there is on the TT's.

If your car is using oil, you should ask the shop to do a leakdown. Valve guides and rings are really the main sources of excessive oil consumption.

Ice9

I had a similar problem a few weeks ago -- exactly the same symptoms and massive oil consumption/leaking post oil change. I took it to The Stable here in San Francisco and they diagnosed it as a leak coming from the lower valve covers. They explained that this was normal in 993s with around 50,000 miles. The repair required the replacement of a series of exotic "O"-rings and took 3-4 hours to complete. I was told by the dealer (Sonnen) that this seal is sometimes replaced as a part of the 30K mile service, however, it is not mandatory.

Hope this helps.