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Old 07-04-2009, 01:42 PM   #1
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What does this hose?

Found today, after changed brakes and brake fluid. No engine service light yet, car works normal at any speed or idle. Please help me, I looked at RealOEM and it's looked like a vacuum hose for fuel filter. Is it something I have fixed ASAP or not a big deal.

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Old 07-04-2009, 02:57 PM   #2
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i hate it when these components get brittle over time and break.

2003 325xi 5MT
Jet Black, ZSP, ZPP, ZCW, OEM Xenon ^^RIP
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Old 07-04-2009, 03:06 PM   #3
Titan 3
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No biggie, but get it replaced.
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Old 07-05-2009, 01:08 AM   #4
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It is a vacuum line, mine broke too, after replacing that boot. I went to O'Reilly's and bought a replacement tee for a couple bucks. If you leave it unhooked it will cause the check engine light to come on, it will make your car run lean because unmetered air is getting in past the MAF sensor.
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Old 07-05-2009, 01:22 AM   #5
bobby digital
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Just bought one of that f connector, was about a dollar+, for that price, no need to get a lean code/ses light. Will not stop car from driving a thousand miles though.
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Old 07-06-2009, 11:07 AM   #6
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I bought this at dealer for 2.70 and they gave free a piece of house, that is go over fuel vacuum hose.
the diagram on RealOEM(engine->vacuum system) called it support(?). p/n 13327503677
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Last edited by phlfly; 07-06-2009 at 11:09 AM.
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Old 07-06-2009, 11:15 AM   #7
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Pretty sure it goes to the fuel pressure regulator on the fuel filter.
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