Thread: 640 Fuel Pump
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Old 07-27-2006, 08:06 AM   #15
meat popsicle
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Joined: Feb 2004
Location: Circumlocution Office of Little Dorrit
Oddometer: 14,247
Originally Posted by Carlos M
Nice "creepinformation" (as ususal)!

I didn't want to be without a replacement and the original diaphragm looked worn. I ended up shelling out for a complete new pump as I couldn't find a rebuilding kit.

Somehow related... I have a recurrent problem with the fuel pump that looks unrelated to the state of the diaphragm: most of the times, when the bike goes into reserve (2001 640) the pump refuses to prime after I switch the fuel manifold into reserve. I found out that I can make it prime by blowing into the tank's breathing pipe.
That's alot easier than putting a priming bulb in the fuel line; thanks for the tip Carlos.
Kronreif Trunkenpolz Mattighofen LC4 640

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