24 Valve Engine and Drivetrain Discuss the 24 Valve engine and drivetrain here. No non-drivetrain discussions please. NO HIGH PERFORMANCE DISCUSSION!

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Old Oct 21, 2007 | 07:10 PM
  #1  
RabidRam's Avatar
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LP Buzz

My first post here, been reading and enjoying the info for quite awhile and now I need help

On the way home yesterday I noticed my fuel pressure dipped down to 4 (gage + red idiot light less than 5 psig) going around a corner then came back up to 14. I thought that was odd. My tank was low but still well above an 1/8th and no light. Today on the way to fuel it up down went the fuel pressure and it died. Got fuel and fired back up and now I notice no buzz when I turn the key on. It fires right up but takes what I think is a long time to build pressure, 2-3 seconds instead of popping right up to 14.

Weak LP and time to replace and/or do I have more issues. No check engine light

Thanks Scott
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Old Oct 21, 2007 | 07:27 PM
  #2  
Shovelhead's Avatar
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From: Central VA
Welcome to DTR.

Dodge Fuel Level Senders are notorious for leaving folks stranded with no fuel when the gauge still reads over 1/8 tank.

Try adding keeping the fuel level closer to 1/2 tank.

You might have air trapped in the gauge line.
It should work it's way out.

Keep an eye on the fuel pressure, the lift pumps have a baaaaaad reputation also.
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Old Oct 21, 2007 | 07:42 PM
  #3  
RabidRam's Avatar
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Originally Posted by Shovelhead
Welcome to DTR.

Dodge Fuel Level Senders are notorious for leaving folks stranded with no fuel when the gauge still reads over 1/8 tank.

Try adding keeping the fuel level closer to 1/2 tank.

You might have air trapped in the gauge line.
It should work it's way out.

Keep an eye on the fuel pressure, the lift pumps have a baaaaaad reputation also.
Thanks. I know better to let the tank get that low but it was circumstance driven. I do not hear the fuel pump when I turn on the ignition and that is part of my question
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Old Oct 21, 2007 | 09:49 PM
  #4  
gunnie's Avatar
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From: ozarks
do you have a factory lift pump or have you changed to a frame mounted? does the fuel pressure gage move at all when you turn the key on? have you tried just bumping the starter without starting to let the pump run ?
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Old Oct 22, 2007 | 05:56 AM
  #5  
Shovelhead's Avatar
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From: Central VA
If you're seeing above zero pressure, then your lift pump is working.

Do you have a mechanical, or electrical FP gauge?
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