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1989 Mercedes Benz 300e Repair Question


Topics covered: Gas, Sensor, Diesel.
Mileage: 132 miles.

Asked on April 20, 2012

What is causing my car to have black smog come out the exhuast after she warms up?

When I start her, she will start no problem, then she starts shaking. I will drive it right away, but the minute that she gets up to operating temp, around 90 degrees, she will shift funny, spit out black soot, and I will have to push the gas pedal to the floor to get her to do freeway speeds.
So far we have done a tune up. We run like sea foam, or b12, She also smells rich, I put the highest level of gas in her.
Avatar Asked by mercedesmama

Answer

Replied on April 20, 2012

is it gas or diesel engine?

Tiny Answered by fixitmr
24 questions asked
Replied on April 20, 2012

Sorry Gas

Tiny Response from mercedesmama
1 question asked
Replied on April 20, 2012

could be a temp sensor failing or MAP sensor. both can make it run too rich. take a plug out and see what color it is. should be tan color.

Tiny Answered by fixitmr
24 questions asked