weird noise when fuel pump starts to pressurize

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4urxtc
Posts: 27
Joined: Tue Nov 25, 2003 7:43 am

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So when I put the ignition to the on position I hear the fuel pump turn on. After that I hear a noise that soinds like water pipes creaking or humming. It starts from the back and continues to the front. So what does this mean? It is very weird. Never heard a car do this. Anyone with any input would be great.


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Eikon
Posts: 6928
Joined: Sat Apr 24, 2004 3:20 am
Car: 71 240z, 93 Supra TT
Location: Lake Orion, MI
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That does sound strange. I wonder if a slight pressure loss somewhere might be creating a weird sound? Have you pressure tested the fuel system?

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240life
Posts: 1313
Joined: Mon Sep 24, 2007 6:02 am
Car: 1993 Nissan 240SX S13 Coupe SR20DET blacktop
Location: ME
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I agree, ether you got a leaky line, or FPR, or your pump is crapping out on you.

4urxtc
Posts: 27
Joined: Tue Nov 25, 2003 7:43 am

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I have a new walboro pump I have not installed. The car struggles to start which I assume is the fuel pump or pressure. It has new spark plugs, and new ignitor. So after I install the fuel pump I will see if it acts the same.

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s13-t
Posts: 419
Joined: Wed Jun 18, 2008 6:07 pm
Car: s13 pig nose w/blacktop sr20det

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fuel line is pretty cheap... if u think yours are cracked or plugged, replace them.


4urxtc
Posts: 27
Joined: Tue Nov 25, 2003 7:43 am

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So I replaced the fuel pump with my walboro. No weird noise which is good. I still have the problem of the motor not starting right away. It turns over but it seems to struggle to start. I have a new ignitor, spark plugs, and new fuel pump. So I dunno if my injectors or coil packs have issues. How to I check these two items?


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