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Old 08-20-2006, 06:21 PM   #61
G-Funk
That ... Umm ..... "Dude"
 
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Joined: Jun 2006
Location: Pacific Northwest
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Thumb Mystery Problem .....

To those that responded regarding my mystery "fuel" delivery issue .....

Yeah ... It's the fuel pump. To make a long story short, with testing it out with specific volumes of gas in the tank .... I.E. - if I siphoned a bunch of gas out, she labored, hard. On a full tank, if I got down to around 1 gal., or a little less, of gas in her, she had problems, basically - by my calclations, around 120 some odd miles .... this going off of when she had 86 miles on her, and then I was in a foot cast for 7 weeks. and starting her a bunch of times, relative to the length of time if took me to get to work, etc ... so if anything, 120 to 130 miles ........ and she labored even with the choke all the way out. I put the gas back in, and 1-2-3, she's back to normal.

I repeated this test 3 times over the weekend, and the results were all identical ......

What else could it be other than the fuel pump? I mean, it is 13 years old ..... and correct me if I'm wrong, but isn't the stock fuel pump gravity fed ????????

Those that replied thought it could be the fuel pump, and suggested replacing it with an electric one.

Thoughts, oppinions, and suggestions .......

G.
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Old 08-20-2006, 06:58 PM   #62
itsatdm
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Location: Nor Ca.
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The fuel imput is on top of the TDM carbs, which sits higher that the lowest part of the tank. The fuel petcock and pump set way below. It probably would gravity feed a portion of the fuel from the tank but not all.
The pump is a simple diaphragm type, with the diaphragm separating the vacuum side from the fuel side and looks simple to replace, except I don't think you can get a kit. The pump is around $90. If there was a tear in it, not only would the pump quit working and rely on gravity to feed the carbs but the vacuum is connect to the base of one of the carbs and would suck gas into the intake upsetting the fuel mixture and run rich. I question wether the pump is adequate even new.
IMO An electric pump makes the TDM run even better. These are on Ebay all the time: http://cgi.ebay.com/ebaymotors/99-00...spagenameZWDVW

Expect to pay $20-35 for one and another $5 for a relay. It is a cheap fix.

itsatdm screwed with this post 08-20-2006 at 09:55 PM
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Old 08-21-2006, 07:38 AM   #63
itsatdm
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Sometime we overlook the obvious, check the vacuum line to the pump for tears, kinks, or softness than may collapse under pressure. All would disable the pump.
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Old 01-07-2007, 05:42 PM   #64
Pezz_gs
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Bellypan??

Has anyone made or seen a Bellypan to suit the later TDM900's ??
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Be interested in buying one.
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Old 01-07-2007, 07:07 PM   #65
twinrider
pass the catnip
 
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Joined: Aug 2002
Location: 日本
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Quote:
Originally Posted by Pezz_gs
Has anyone made or seen a Bellypan to suit the later TDM900's ??
A lot of info at Carpe-TDM. Just do a search here:
http://www.carpe-tdm.net/ipb/index.php?act=idx
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Old 01-15-2007, 12:19 PM   #66
masterbrewer
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Location: Adelaide, South Australia
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TDM Adventurer in mini Dakar?



Here's the linky dink with all the fun

http://www.advrider.com/forums/showthread.php?p=3920129

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Old 01-16-2007, 10:33 AM   #67
Shooter_Mcgaven
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Joined: Jan 2007
Location: Oak Harbor, Wa.
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Thumb Screw the BMW's

Here's a pic of my '93 TDM850. I ride this bike all year round as my main transportation to work. I ride 140 miles round trip and I can't think of a better bike to do this on!
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Old 01-18-2007, 02:20 AM   #68
Pict
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Joined: Sep 2006
Location: Hertfordshire, England
Oddometer: 33
Bellypan for later TDM's

Quote:
Originally Posted by Pezz_gs
Has anyone made or seen a Bellypan to suit the later TDM900's ??
Be interested in buying one.
For what it's worth (i.e. for cosmetic results rather than protection, as it turned out) I've posted a pic of a Powerbronze bellypan fitted to my 2004 vintage TDM 900 here

As you can see, though, there is only 4-6 inches ground clearance - typical of these things, so strictly for fairly civilised surroundings.

Probably the best fitment would be the Puig (German) one, as obtainable routinely on eBay (e.g. current item 160069424239): search "bugspoiler".

The 900 is a great bike for touring, yet slender enough and with plenty of low-rev torque, for use in city traffic. Handles well on twisty roads, too, and the fuel consumption is excellent - take it from a Scot! And with "sporty" cans (check this soundbite out with the volume turned up) and verified speeds of at least 130-140 mph (UK - our miles are a whisker smaller than US?), sure sporty enough for most....

Sad you guys in the US are denied the pleasures of the 900, while the rest of us have all the fun

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Old 01-18-2007, 02:49 AM   #69
twinrider
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Location: 日本
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Quote:
Originally Posted by Pict
For what it's worth (i.e. for cosmetic results rather than protection, as it turned out) I've posted a pic of a Powerbronze bellypan fitted to my 2004 vintage TDM 900 here
Why that's a mighty nice TDM you have there, Mr. Pict

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Old 01-18-2007, 05:34 AM   #70
aytcat
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Location: UK.Wiltshire North of Stonehenge :)
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Hi just joined this group, from Uk got a 2000 TDM850 Mk2 silver/grey 37k miles
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Old 01-19-2007, 01:05 AM   #71
Pict
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Location: Hertfordshire, England
Oddometer: 33
Further TDM pictures

Quote:
Originally Posted by twinrider
Why that's a mighty nice TDM you have there, Mr. Pict
Thanks for the compliment! Mine doesn't see anything but hard UK roads, but for more general pictures around the world, see the Carpe TDM site or the photo collection from current and previous club calendars etc.

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Old 01-19-2007, 05:43 AM   #72
Dandywarhol
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Joined: Jan 2007
Location: Edinburgh scotland
Oddometer: 1
Tdm

Hi....just joined up courtesy of twinrider's post in Carpe TDM.

Two of us had a fairly big Euro tour last year on our TDMs, on asphalt I have to admit but there was around 100 miles of offroad, laden with touring luggage .
The route tok us from the UK to Venice via the Alpine Stelvio Pass, ferry to Corfu and back to the UK via greece, Bulgaria, Romania, Hungary, slovakia, Poland, Czech Rep. Germany Holland and Belgium. Around 5000 miles..........one of the best trips I've done

Pics here: http://uk.pg.photos.yahoo.com/ph/citroen54/my_photos


2003 TDM900
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Old 01-19-2007, 09:18 PM   #73
masterbrewer
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Joined: Dec 2005
Location: Adelaide, South Australia
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G'Day Pict & Dandy

Started getting you interested in the "Dark Side" of TDM Adventuring have we?

I've been waving the flag for some time with my Adventure Ride Reports


Cheers


MB
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Old 01-19-2007, 10:18 PM   #74
Tom S
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Location: Anchorage Alaska
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Masterbrewer, Pict, & Dandywarhol. I recognize you all from CarpeTDM, http://www.carpe-tdm.net/ipb/index.php?&&CODE=00.
Damn good site & the best / only one for TDM's I ain't been there for a while, but I intend to be back! Good to see ya here.
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Old 01-19-2007, 10:33 PM   #75
Rolling Thunder
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Location: Blythe, California
Oddometer: 105
Quote:
Originally Posted by Shooter_Mcgaven
Here's a pic of my '93 TDM850. I ride this bike all year round as my main transportation to work. I ride 140 miles round trip and I can't think of a better bike to do this on!
Preach it Brother! BMW is just now figuring out that a parallel twin 800cc bike is a good idea. Yamaha figured that out back in the early 90's. Your bike looks just like my 93'. See my pictures earlier in this thread. Here is another picture of me and my 93' 850 at the Grand Canyon last July.

Howdy Tom S!


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