Engine burning rich - Mercedes-Benz Forum

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post #1 of 2 (permalink) Old 07-11-2011, 11:40 AM Thread Starter
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Engine burning rich

Helping a friend fix a 1971 280 SL. It runs very rich and keeps fouling plugs.
1. What is the recommended plug for this car?

2. I'm told there is a "fuel enrichment control" on the fuel injection unit. Where is it and do I turn it left or right to change the mix ?

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post #2 of 2 (permalink) Old 07-12-2011, 09:02 PM
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Look up info for Bosch D-Jet (short for D-Jetronic) fuel injection. A lot of European manufacturers used it, Porsche, MB, SAAB, Jaguar, to name a few. The theory is fairly easy, but some of the components can be a bit pricey and rare.

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