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Old 08-26-2008, 02:05 PM
Oracle12345 Oracle12345 is offline
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Join Date: Jul 2007
Location: USA
Posts: 2,156
You clean out all the gas before testing it on a car battery...

I have an extra car battery lying around just for these purposes to test pumps and other devices.

Ive tested many fuel pumps that way. One pump is to pump it from the tank and the other is too pump it to the engine.
1986 300SDL, 211K,Dealership serviced its whole life
1991 190E 2.6(120k)
1983 300D(300k)
1977 300D(211k)
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