Smoking exhaust !!

[JCTPM]

new here and been reading up that it's normal for the Boxster to give off some smoke during startup. But the other day on the highway, I kind of got on the car pretty hard and when I looked back there was smoke continuously pouring out the exhaust. The engine light came on so I backed off cruising about 50. After awhile it went away. This has happened about 3x now ( whenever I accelerate hard or floor it ) Anyone know what this could be ? Is the car burning oil ? Thanks.

[PeterJoyce]

Check the oil level. But not on the digital gauge, measure it through the dip stick. I dont know much about this but someone who does will need this information...

What model/year?
Milage?
What does it smell like?
Black/white smoke?

[Morelli]

Do a compression test. If the smoke is bluish, and comes in when the engine is under load (heavy acceleration, deceleration by downshifting), you could have burnt up the piston rings. A compression test should be able to tell you which one if that is the case.

[Brucelee]

You need a shop visit. It is NOT abnormal to get some blackish smoke when you hammer the car at highway speeds. It is NOT normal to get a check engine light under these conditions. That is a troubling sign.

Hard to speculate on what is going on here. I once had a bad catalytic converter give me the exact same symptoms you describe but that could be total coincidence.

[limoncello]

Just curious - black smoke on hard acceleration could be unburned fuel (seems unlikely with hi-tech engine management) or accumulated carbon somewhere along the line. Anybody have thoughts on what the source of the smoke is?

[Brucelee]

Impossible to diagose as you would have to see the smoke and observe other issues. The service shop is where you belong with this issue.

Esp if engine light is coming on!