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Old 06-10-2003, 04:59 PM
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I had a simular problem with an 87 420 SEL that I cleaned the Air/fuel mixture intake (the unit under the air filter with the vacuum operated door) and it appears that my cleaning it threw the air fuel mixture way off. I used dewl meter and adjusted the On/off ratio back to 50% and it started right up and has been running OK. Might be worth a try.

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