I NEED HELP TO FIND OUT WHY MY CAR WONT RUN PROPERLY?

1977 Mercedes Benz 420sel

Tiny

Walter Martin

October, 11, 2011 AT 4:06 PM

Can you help me find out what is wrong with the fuel system/air pressure mixture. Thanks.

very nice car.450 SEL -US Model. Only done 53,000 miles!
The car starts and idles for a while but will not rev up.
-it stalls when the throttle is applied have replaced the fuel pump, regulator, filters etc.

FOUND 1191 RELATED QUESTIONS

3 Answers

Tiny

Jacobandnickolas

October, 11, 2011 AT 4:08 PM

Check the throttle position sensor. Check for major vacuum leaks.

Tiny

Walter Martin

October, 11, 2011 AT 4:21 PM

Thanks very much for that!
-how would I check for major vacuum leaks?

Tiny

Jacobandnickolas

October, 11, 2011 AT 4:30 PM

Go to our homepage under the DIY section for directions.

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