Subject: welcome here Author: shogun (moderator) : member since March, 2004 : 13900 posts Posted on: 2010-03-10 22:55:00

You mention that you hear the fuel pump whirring when you switch the ignition on. That is basically a good sign, but it should stop after a few seconds when the required pressure is reached and the engine is not started.
A shot in the dark, but maybe your fuel pump is on its way out.
Whirring is o.k., but I have already tested fuel pumps on my 750 which were whirring but I could stop the pump easily with my thump, so with counterpressure it stopped immy.
Make first a simple test: remove the fuel line in engine room, start the car for a short time and see if gas/fuel comes out. You can even check the volume like shown here under testing the fuel pressure regulator
http://bmwe32.masscom.net/sean750/fuel_pressure_regulators/FuelPressureRegulators.htm
Of course could be many other things, but I would start to check if really fuel is delivered in the right volume and the right pressure.

Let us know the result.
In case you have a fuel pressure tester, it is of course more easy and accurate to test. For example Haborfreight have cheap ones.
You can also make one DIY with a pressure gauge, some fuel hose and a Y-piece.

Please add as your signature your MODEL and MONTH and YEAR of PRODUCTION, so it will always be automatically shown. That makes it easier for us to look into the right wiring diagrams or drawings and parts lists when you have a problem.
To make a signature, go to the top of this page again to "my account" click there and then scroll down till you find:

"Optional HTML signature to be automatically appended to all
of your message posts."

There just type in your details and it will always be shown when you post.
To get the month and year of PRODUCTION, use this VIN decoder
http://www.bmw-z1.com/VIN/VINdecode-e.cgi

There is also a test forum there over to the right>>>>>
to see if your pics will work.

E32 750iL 11/88, E32 750iL Highline 03/90
SHOGUN'S TRICKS AND TIPS FOR THE SEVEN SERIES

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  • welcome here (url) - shogun 2010-03-10 22:55:00 (127 views)
    • Re: welcome here - thepainmayne 2010-03-10 23:08:28 (114 views)
      • remove the fuel hose in engine room - shogun 2010-03-11 00:13:09 (114 views)