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Join Date: May 2005
Location: Cridersville, OH
Posts: 1,879
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Bleeding the fuel system on a 3.2l
Just wondering if there is any trick in getting the air out of the rails and lines on a 3.2l. Sould it bleed itself or is there a fitting that should be loosened while under pressure?
Also what about bleeding the fuel filter? I'm thinking I have some air trapped and have tried a few ways to bleed it off but still having problems. What's your idea?
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75 911 Indian Red- RUFWAN2B 2000 Boxster 2000 & 2007 Dobies www.stahlwerks.com Cages and preparation for your Porsche “People who never make mistakes must get tired of doing nothing” Bill : The origin of the orgy of Porsche |
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11-07-2007, 04:49 PM
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Join Date: Nov 2000
Location: Dallas
Posts: 3,593
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The only access I know of is the port used to test fuel pressure which is just a threaded cap with a ball bearing (?) inside on the back left (driver) side fuel rail. This thread is of interest to me since I've got my lines all disconnected for a engine drop and valve guide replacement and the fuel has drained out. I assumed it would fill up once I ran the pump/starter long enough after I get everything hooked up. Has this not worked for you?
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Buck '88 Coupe, '87 Cab, '88 535i sold, '19 GLC 300 DD Warren Hall, gone but not forgotten |
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11-08-2007, 07:31 AM
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Join Date: Feb 2004
Location: louisiana
Posts: 1,478
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I run the fuel pump from the fuse panel. I use a key and cross two fuses together from the top post.
You can hear air traveling back to the tank. I don't think it's necessary though. I've changed injectors and lines and pumps and never had a problem. I guess to answer the question I believe it bleeds itself |
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11-08-2007, 08:07 AM
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Join Date: May 2005
Location: Cridersville, OH
Posts: 1,879
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Buck- I believe it's bleeding itself fine. Just curious if anyone has had trouble in the past.
Jerry- I've ran the fuel pump a couple of times by itself and hear air every once in a while. I'm now looking into a loose fitting or line that may be sucking air. I would think it would leak fuel from the pressure but just need to check for my own sanity.
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75 911 Indian Red- RUFWAN2B 2000 Boxster 2000 & 2007 Dobies www.stahlwerks.com Cages and preparation for your Porsche “People who never make mistakes must get tired of doing nothing” Bill : The origin of the orgy of Porsche |
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11-08-2007, 12:36 PM
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