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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Meth woes WW to trunk conversion



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      11-12-2012, 06:01 AM   #23
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What you prime on 7/5, where does the needle show flow at?
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      11-12-2012, 08:09 AM   #24
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I have a wire that goes from the FSB to the solenoid then to the pump, and the pump grounds on ground spot near the battery.

The deal is, it used to work, with that wiring. I don't have 10g, it's 14g I think, but like I said, it was working.
When I prime on 7/5, it almost goes to the halfway mark...much lower than it used to
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      11-12-2012, 08:10 AM   #25
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Last night I switched it back to WW setup, I can barely get the needle to get to the half way mark and when I used the WW pump purge...it goes to about 65-70% on the gauge (in which it used to peg the gauge)
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      11-12-2012, 09:22 AM   #26
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Hmmm at least you can rule out the trunk mount being the issue. Pump failure? I know they don't fail, but maybe yours has?
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      11-12-2012, 09:24 AM   #27
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Ya, that's what everyone says...they don't fail.

It's frustrating as hell!
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      12-07-2012, 01:41 PM   #28
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you resolve this issue yet?
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      12-07-2012, 01:42 PM   #29
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Yes I did...bad pump. It was pumping but just not enough. Swapped the pump and all is good.
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      12-07-2012, 01:59 PM   #30
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interesting, good to know
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      12-07-2012, 02:18 PM   #31
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Ya, I can only speculate, but about a year ago I had some issues with the solenoids "gumming" up. I think the meth had some type of build up contamination...not sure.

But I wonder if the added stress contributed to a premature death...
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