TWO fuel pumps.. Really?

[ronzoni89]

I will add that the fuel sucking contraption that moves the fuel over the hump does go bad in the sense that there's an O-ring at the top where it connects to the sender that hardens and goes bad. This breaks the seal enough that the venturi magic quits working, and it will not move the fuel over the hump, even after replacing the fuel filter as I did.

[upallnight]

Originally Posted by nate13

There is a suction pump that goes between the saddle of the tank, and is driven by your main fuel pump. Replacing your fuel filter will help as there is less back pressure, but the thing to do is fish around in there and make sure it's connected and clean (and free of holes/ damage!). I have an ongoing issue with my 330 dying on the highway on less than a quarter tank, but only if driven extended periods. I've since changed my habits and fuel up at 1/4 or more. Too much money for such an odd problem!!

See this thread

http://www.xoutpost.com/bmw-sav-foru...yesterday.html

[vonmerowing]

what i am reading , x5 question should be discussed by mechanics and other x5 users , previous or current . that would stop a lot of distraction , now listen , the x5 e53 has two and actually three fuel pumps, one : in the tank , fuel delivery pump , second the small dosage pump for your auxiliary heater , webasto , third and most important if go wrong is the high pressure fuel pump 2.5 bars if i remember right which sits left hand side of engine in the middle and is a pig to get too ! so i hope that helps some of you

[upallnight]

Originally Posted by vonmerowing

what i am reading , x5 question should be discussed by mechanics and other x5 users , previous or current . that would stop a lot of distraction , now listen , the x5 e53 has two and actually three fuel pumps, one : in the tank , fuel delivery pump , second the small dosage pump for your auxiliary heater , webasto , third and most important if go wrong is the high pressure fuel pump 2.5 bars if i remember right which sits left hand side of engine in the middle and is a pig to get too ! so i hope that helps some of you

More useless info for a post that is 4 years old and the OP is a USA citizen.

Sorry but USA X5s are not equipped with a webasto heater, nor is a webasto heater an option in the USA.

[vonmerowing]

a webasto heater is always an option and anywhere as well , however , fuelpump related, it is to take not that there are still two then !at least

[vonmerowing]

and its not useless , i just got here for answers , because of my problem with my fuel pump, the thread is still alive and important , does it matter if its four years old , the cars are still around , why so ignorant ?

[upallnight]

In all the years that I worked on X5 and other British cars in the USA I have yet to find a car equipped with a webasto heater. Perhaps the heater is not approved by DOT for use in cars, probably because our over regulated government is concerned that you have a gasoline fired heater in/on the car and either it will catch fire in the event of a crash, or the carbon monoxide produced by the burning of gasoline will render a driver unconscious.

Why the name calling?

Let me add you to my ignore list.

[vonmerowing]

Originally Posted by upallnight

In all the years that I worked on X5 and other British cars in the USA I have yet to find a car equipped with a webasto heater. Perhaps the heater is not approved by DOT for use in cars, probably because our over regulated government is concerned that you have a gasoline fired heater in/on the car and either it will catch fire in the event of a crash, or the carbon monoxide produced by the burning of gasoline will render a driver unconscious.

Why the name calling?

Let me add you to my ignore list.

x5 and other British cars ? what like a mercedes ? or an audi?
these are german cars , and i didn't call you a name , i called you ignorant because of your remark : another useless comment on a four years old post by an american ,
the forum is worldwide ( you are indeed using the internet here my friend )so why would you bring time and geography in , we all can do with help and are able to choose which bit we take , now i commented for clarity and from the things i know , being in england , and i have friends in detroit and canada and they have auxilary heaters , so its not for nothing , but you are welcome to ignore me !

[upallnight]

Originally Posted by vonmerowing

x5 and other British cars ? what like a mercedes ? or an audi?
these are german cars , and i didn't call you a name , i called you ignorant because of your remark : another useless comment on a four years old post by an american ,
the forum is worldwide ( you are indeed using the internet here my friend )so why would you bring time and geography in , we all can do with help and are able to choose which bit we take , now i commented for clarity and from the things i know , being in england , and i have friends in detroit and canada and they have auxilary heaters , so its not for nothing , but you are welcome to ignore me !

2006 Infiniti G35
2001 BMW 3.0I E53 X5 Build date 08/2000
Lotus Europa 1970 Destroyed by fire
Lotus Europa 1970 S2 Renault Powered
Lotus Type 52 1970 Twincam Webers Powered
PORSCHE 911 Targa 1982 The Garage Queen
Audi Avant donated to Kars for Kids
BMW 525IT Sold
Audi 4000CS Quattro Sold
Jensen Healey Lotus Powered Sold
Opel 1900 Sold
Triumph Spitfire 1971 Sold
Triumph Spitfire 1968 Sold
Plymouth "Cuda" 340 Six pack SOLD

Perhaps you are not old enough to remember these British cars that I highlighted in my signature.

[vonmerowing]

Perhaps you are not old enough to remember these British cars that I highlighted in my signature.[/QUOTE]

that is just too nice of you to say , thank you ,but again you make a mistake , you didnt say the cars you owned , you said the many cars you worked on , however , i just wrote an informative comment , you felt like it is necessary to insult me , so why blame me , got a mirror ?