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Old 06-12-2000, 11:03 PM
mrroche
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My 1991 420SEL (78,000 miles) has a sudden pulsation in the idle at stops. Has been reciently tuned/maintained but didn't stop the idle pulsation. The range of pulsation is only a few hundred RPM. Also seem to have rough start problem when outside temp is hot and car has sat for over an hour (also bad exhaust smell outside after hard start). Any suggestions on where to look?

Thank for your help!

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MrRoche
1993 300E
1991 420SEL
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Old 06-13-2000, 10:24 PM
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Join Date: Mar 1999
Location: Suwanee, GA, USA
Posts: 4,712
Be sure to have the EHA checked for signs of fuel seepage, if it has any signs of leakage, I would replace it and have the fuel mixture checked with a lambda tester.

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Benzmac:
Donnie Drummonds
1992 500E (very soon I hope
1981 280GE SWB
ASE CERTIFIED MASTER AUTO TECHNICIAN
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