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Old 12-06-2017, 04:09 AM
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andrewwynn andrewwynn is online now
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Join Date: Jun 2015
Location: Racine, WI
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e53 Fuel Supply Detailed (fuel pump / siphon pump diagnostic help)

You may be able to Repair. Clean the resistance bar and add some spring pressure to the wiper and you'll likely fix it.

Having just done 4 or 5 fuel pump swaps, her is a very helpful tip: a bucket to collect lots of paper towel to soak up any gas. Once you are done use a fire pit or grill etc to dispose by fire. No safer way to get rid of a gas soaked rag than controlled burn. We have a fire pit with a screen over the top that works perfectly.


I want to add: I'm thrilled to see people being able to take advantage of the unbendable l unbelievable pain in the ass it took to research and put into words this thread. Especially that somebody already resurrected a siphon pump head (seam with no seal: moron move BMW!). Awesome!
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2011 E70 • N55 (me)
2012 E70 • N63 (wife)

Last edited by andrewwynn; 12-06-2017 at 04:15 AM.
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