Hi Brickboard readers

Learned a lot from reading this board and I have a question regarding my sister's car. a classic 1991 740GL.

we were driving over a moderate incline today and my sister gave the car a little more throttle as she usually does when she felt a loss of power[ we were slowing down half way up and other people were passing us]. I did not feel the car surging forward. as a matter of fact, we were still slowing down. suddenly, we saw a large cloud of blackish gray smoke emitting from must have been our car's tailpipe through the rear and side mirrors.

both of us panicked and my sister gun the throttle again to make sure and sure enough it did it again. just a large cloud of blackish gray smoke.

the smoke went away as she eased up on the gas pedal. we just limped over the incline thereafter. when we got to the top the car ran just fine on the flat and decline part of the road.

is this a sign of trouble ahead for this car?

would a compression test tells us anything?

thanks
I asked my sister to


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