Comments on: BMW Bavaria + Carter 4070 Fuel Pump http://www.lesliewong.us/blog/2007/09/07/bmw-bavaria-carter-4070-fuel-pump/?utm_source=rss&utm_medium=rss&utm_campaign=bmw-bavaria-carter-4070-fuel-pump Tue, 17 Jan 2012 22:33:40 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Rick http://www.lesliewong.us/blog/2007/09/07/bmw-bavaria-carter-4070-fuel-pump/#comment-42146 Rick Sun, 08 Mar 2009 03:45:26 +0000 http://www.lesliewong.us/blog/2007/09/07/bmw-bavaria-carter-4070-fuel-pump/#comment-42146 I have Webers on my 72 Bavaria. I have a fairly generic Purolator electric pump installed in the trunk just north of the fuel tank. Today it died on me... it blew a fuse, and the replacement. I think the pump just gave out--it was previously installed in the engine compartment but made such a terrible racket I had it moved to the trunk. I'm encouraged to hear about this pump designed to be in the trunk--I think mine gave out like a weak heart. I have Webers on my 72 Bavaria. I have a fairly generic Purolator electric pump installed in the trunk just north of the fuel tank. Today it died on me… it blew a fuse, and the replacement. I think the pump just gave out–it was previously installed in the engine compartment but made such a terrible racket I had it moved to the trunk. I’m encouraged to hear about this pump designed to be in the trunk–I think mine gave out like a weak heart.

]]> By: mr.leslie.wong http://www.lesliewong.us/blog/2007/09/07/bmw-bavaria-carter-4070-fuel-pump/#comment-35830 mr.leslie.wong Sun, 08 Jun 2008 22:20:17 +0000 http://www.lesliewong.us/blog/2007/09/07/bmw-bavaria-carter-4070-fuel-pump/#comment-35830 David, Have your Webers been rebuilt? It sounds like there is some kind of air leak. If the base of the carburetor or manifold isn't flat that could cause the problem. Also, if the throttle shaft is worn, air will be pulled in through the leak and cause that. See page 4 of this <a href="http://www.lesliewong.us/bmw/Weber_Troubleshooting_Guide.pdf" rel="nofollow">Weber Troubleshooting Guide</a>. While the engine is idling, spray carburetor cleaner on the outside of the carburetor and intake manifold. If there is a vacuum leak the idle speed will change. I'll take a picture of my setup later and post it. David,

Have your Webers been rebuilt? It sounds like there is some kind of air leak. If the base of the carburetor or manifold isn’t flat that could cause the problem.

Also, if the throttle shaft is worn, air will be pulled in through the leak and cause that.

See page 4 of this Weber Troubleshooting Guide. While the engine is idling, spray carburetor cleaner on the outside of the carburetor and intake manifold. If there is a vacuum leak the idle speed will change.

I’ll take a picture of my setup later and post it.

]]> By: David Carrasco González http://www.lesliewong.us/blog/2007/09/07/bmw-bavaria-carter-4070-fuel-pump/#comment-35814 David Carrasco González Sun, 08 Jun 2008 11:03:58 +0000 http://www.lesliewong.us/blog/2007/09/07/bmw-bavaria-carter-4070-fuel-pump/#comment-35814 I have a E3 3.0S. I have also purchased a pair of Webers to replace the OEM Zeniths. After installing on the factory manifolds, I am having problems with the rear carb, fuel drips from the Venturi tube, mixture enriches and I get continuous stalling. I am sure it is not a carb issue since I have them interchanged and always the carb put at the back becomes problematic. I suspect of the vaccuum circuit. It is as if the rear carb is not vaccuum-operated so fuel level grows at the top. I would appreciate your comments on this. If only you could post a picture of you vacuum circuit installation, that would be superb! thanks. David I have a E3 3.0S. I have also purchased a pair of Webers to replace the OEM Zeniths. After installing on the factory manifolds, I am having problems with the rear carb, fuel drips from the Venturi tube, mixture enriches and I get continuous stalling. I am sure it is not a carb issue since I have them interchanged and always the carb put at the back becomes problematic. I suspect of the vaccuum circuit. It is as if the rear carb is not vaccuum-operated so fuel level grows at the top. I would appreciate your comments on this. If only you could post a picture of you vacuum circuit installation, that would be superb!

thanks.
David

]]> By: mr.leslie.wong http://www.lesliewong.us/blog/2007/09/07/bmw-bavaria-carter-4070-fuel-pump/#comment-27681 mr.leslie.wong Wed, 02 Jan 2008 02:34:54 +0000 http://www.lesliewong.us/blog/2007/09/07/bmw-bavaria-carter-4070-fuel-pump/#comment-27681 <p>Jeff,</p> <p><a href="http://www.summitracing.com/customerservice/Support.asp?target=support.summitracing.com/scripts/rightnow.cfg/php.exe/enduser/std_adp.php?p_faqid=618&p_created=1002141880&p_topview=1" rel="nofollow">Summit Racing</a> seems like it will ship to Australia for a $ AUD 28 additional handling charge.</p> Jeff,

Summit Racing seems like it will ship to Australia for a $ AUD 28 additional handling charge.

]]> By: Jeff Mullins http://www.lesliewong.us/blog/2007/09/07/bmw-bavaria-carter-4070-fuel-pump/#comment-27671 Jeff Mullins Wed, 02 Jan 2008 00:49:19 +0000 http://www.lesliewong.us/blog/2007/09/07/bmw-bavaria-carter-4070-fuel-pump/#comment-27671 I have a 1976 E3 3.0L. Whilst the carbys work well I am having trouble with the mechanical pump. I will make enquiries in this country about the Carter unit. Thanks, Regards Jeff I have a 1976 E3 3.0L. Whilst the carbys work well I am having trouble with the mechanical pump.
I will make enquiries in this country about the Carter unit.
Thanks, Regards Jeff

]]> By: mr.leslie.wong http://www.lesliewong.us/blog/2007/09/07/bmw-bavaria-carter-4070-fuel-pump/#comment-24959 mr.leslie.wong Mon, 10 Dec 2007 11:38:41 +0000 http://www.lesliewong.us/blog/2007/09/07/bmw-bavaria-carter-4070-fuel-pump/#comment-24959 <p>Jason,</p> <p>The oil pressure shut off switch is for safety. I looked at that inertia switch too. Joe Weir, on the <a href="http://www.seniorsix.org/" rel="nofollow">Senior Six Registry</a> mailing list, gave me a BMW fuel pump relay part number (12 63 1 277 245, about $35-40) and Bill Gau gave me a <a href="http://www.seniorsix.org/photos/e3_pre_73_wiring.jpg" rel="nofollow">wiring diagram</a> for the car. The relay is connected to the ignition and fuel pump - so when the ignition is off, no power to the fuel pump. I have the diagram somewhere, I'll put up a link to it when I find it.</p> <p>Ronn, </p> <p>I bought the Carter 4070 pump from <a href="http://store.summitracing.com/partdetail.asp?autofilter=1&part=CRT%2DP4070&N=700+4294836965+115&autoview=sku" rel="nofollow">Summit Racing Equipment</a> for $ (US) 72.00 based on the comments in these notes at <a href="http://www.racetep.com/webfuelspark.html#webfuel" rel="nofollow">Top End Performance</a>. As I said, I think it is more of a "pusher" type pump, so it should be mounted as close as possible to the tank, not up near the carbs, where I put it the first time.</p> Jason,

The oil pressure shut off switch is for safety. I looked at that inertia switch too. Joe Weir, on the Senior Six Registry mailing list, gave me a BMW fuel pump relay part number (12 63 1 277 245, about $35-40) and Bill Gau gave me a wiring diagram for the car. The relay is connected to the ignition and fuel pump – so when the ignition is off, no power to the fuel pump. I have the diagram somewhere, I’ll put up a link to it when I find it.

Ronn,

I bought the Carter 4070 pump from Summit Racing Equipment for $ (US) 72.00 based on the comments in these notes at Top End Performance. As I said, I think it is more of a "pusher" type pump, so it should be mounted as close as possible to the tank, not up near the carbs, where I put it the first time.

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