1985 Mercedes Benz 300td smog

1985 MERCEDES BENZ 300TD
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MAXMARGAR.COM
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Engine Performance problem
1985 Mercedes Benz 300td Two Wheel Drive Automatic 150000 miles

exorst pipe bleck smog-only in low speed?
May 30, 2009 at 8:38 AM
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RASMATAZ
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Sounds like its running rich

Possible causes include a bad O2 sensor, excessive fuel pressure (bad fuel pressure regulator or plugged return line), leaky fuel injectors, dirty air filter or restricted air inlet, or a defective coolant sensor that prevents the engine management system from going into closed loop mode
May 30, 2009 at 5:16 PM
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