Mercedes-Benz Forum - View Single Post - Contemplating adding electric fuel pump to E300TD
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post #9 of (permalink) Old 06-17-2019, 11:06 PM
tjts1
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Date registered: Apr 2009
Vehicle: 87 300D 5 speed
Location: The slums of Beverly Hills
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I added electric pumps to both my 87 and 97 diesels just below the fuel tank. It makes changing fuel filter very easy. Just swap in the filter completely dry and run the electric pump for a few sec. Engine starts right up first crank. On the 87 turbo diesel the pump is on a 3 position switch. ON, OFF or AUTO. In auto the pump activates any time boost pressure exceeds 3 psi. It makes a noticeable difference in power. On the 97 non turbo it's just ON or OFF. Mostly use it for cold starts or starting on a steep hill with low fuel where the column of fuel has to be pulled up hill.

These cars should've had an electric pump under the fuel tank from the factory.

Pump on my 87 mounter under the rear seat. It's a Delphi something or other diesel pump.

Last edited by tjts1; 06-18-2019 at 06:17 AM.
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