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Bentley info on pumps
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Posted by Ronald M. Friesen [Email] (more from Ronald M. Friesen) on Sun, 8 May 2005 22:41:56 Share Post by Email
In Reply to: how to tell what kind of fuel pump.., garrettt3, Sat, 7 May 2005 19:52:29
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Had fuel pump problems on my 87 900s a few years back. Fuel pump would shut down every 50 miles or so while on a trip until I kept the gas tank above 1/2 full. turns out the supply pump was going out and apparently needed the cooling effect of more gas.
Bentley says:1986-88 non-turbo & 1985-89 turbo - Roller type pump. This one has a supply pump which feed gas into a reservoir holding the fuel pump. I got a used supply pump - much cheaper than the main pump.
1989 & later non-turbo & 1990 & later turbo - rotor type pump. No separate supply pump but uses an ejector pump which picks up additional gas from the bottom of the tank and forces it into the reservoir.

posted by 4.225.21...

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