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Old 12-03-2012, 07:08 AM   #31
roger 04 rt
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Good luck with this. I might have mentioned it but if there is a way you can measure the volume of fuel returning to the tank when the bike is idling, you can get a good idea of the whole system. There should be about 2 liters returning to the tank per minute. Other than you're relying on the fact that the fuel pressure regulator is working, the return volume test is checking the pump, filter and in-tank hose integrity.
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Old 12-07-2012, 08:34 AM   #32
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Update

Its a fuel problem. It has to be. I Installed the new TPS. It seemed to help a little. But it was still having issues starting. I so grabbed some starting fluid from my beetle and gave it a squirt. sure enough it roared to life without hesitation and ran great until the fluid mist ran out. So then I thought if it was a fuel restriction problem I could disconnect the return line only to help build fuel rail pressure. It didn't help, and listening to the fuel pump, it didn't seem to be like it was building any additional pressure. So I went to the auto parts store and bought 6 ft of fuel line and 6 ft of smaller line for the in tank breather line as well as an external mount fuel filter. So tonight I am going to hook all of this up and hope it fixes it. I WANT MY BIKE BACK!!!!!!!!
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Old 12-07-2012, 08:50 AM   #33
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Did you get the proper submersible high pressure fuel line for the lines in side the tank? ( the proper stuff is 5/16" SAE J30R10) its about $18 per foot i think.

and what will you do about the "U" shaped peice? its $35 from BMW, you cant bend a tight enough radius with the submersible fuel line.
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Old 12-07-2012, 11:30 AM   #34
RAL88
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As was mentioned earlier just mount the fuel filter externally. I replaced my fuel filter in the tank and then 500 miles later got a bad tank of gas and had to replace it again. That's when I moved it to the outside and it made things so much easier. You can easily bend the fuel line that replaces the filter.
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Old 12-07-2012, 08:03 PM   #35
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Yeah I bought a large filter to mount externally. I also got some brass fittings that I am going to use for the 180 deg angle I'm doing all this fun stuff tomorrow. Ill check back when I got it done.
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Old 12-07-2012, 08:13 PM   #36
roger 04 rt
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It will be interesting to hear about the condition of the hoses that are in the tank. I ended up having to dissect mine after removal to find the cracks. I decided to leave everything in the tank.
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Old 02-01-2014, 06:24 PM   #37
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