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Relieving Fuel Pressure (About to change fuel pump)

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Old Feb 19, 2009 | 05:41 PM
  #1  
DyingYoung138's Avatar
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Senior Member
 
Joined: Jun 2008
Posts: 398
Likes: 3
From: Maryville, TN
Car: '86 Trans Am
Engine: 305 H.O.
Transmission: 700r4
Relieving Fuel Pressure (About to change fuel pump)

Fuel pump in my trans am went out. I went to start my car a few nights ago and it would try to crank, but just wouldn't fire off so I let it sit until the next morning when I had some light. Pulled the breather off the carb and checked to see if I was getting fuel... and I'm not. I was afraid of it being the wiring, but I'm apparently getting power to the fuel pump, it's just not working... so I went out yesterday and bought a new one.

What I'm asking now is, how do I relieve the fuel pressure in the tank or do I even have to? I'm running a 305 4barrel carb and a previous owner made a hack in the hatch for a trap door to the pump (which has been smoothed out) so I do have very easy access and won't have to drop the tank. How much of a pain in the *** is this going to be?
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Old Feb 19, 2009 | 08:29 PM
  #2  
rodrob1961's Avatar
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Joined: Nov 2008
Posts: 79
Likes: 0
From: COTTONWOOD FALLS, KS
Car: 2003 SILVERADO /86 IROC/85 S10
Engine: 305 TPI
Transmission: 700R4
Re: Relieving Fuel Pressure (About to change fuel pump)

Pull the fuse to the pump. Open the gas cap. crank engine for a few minutes. let sit for a few minutes and crank again. Should relieve all the pressure. Go ahead and wrap a rag around the line when you loosen it to catch any fuel that might be in the line still.
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