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Old 02-04-2010, 03:27 PM   Thread Starter #1
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Default How to Install Walbro 255 Fuel Pump

Member Credit: Chernmax

OK, I had been pumping more air (well I'm boosted) and wanted a better fuel balance so I talked with Tim at Speed Force Racing who makes the 6th Gen Turbo kit and he recommended installing the Walbro 255 fuel pump which I did yesterday. After install I noticed a high pitch noise which is not so noticeable inside since I sound proofed the back seat area and my trunk was already done previously. Anyway I spoke with Tim at SFR and Googled this Walbro noise problem and low and behold, it's normal, so with that said, anyone upgrading their Fuel pump to a Walbro 255 should expect the same thing!!!


Walbro 255 Fuel Pump

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Back seat removed prior to removal of fuel pump assemply

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6th Gen Fuel pump assembly removed/new fuel pump installed

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Under rear seat area sound proofing using B-Quiet Ultimate.

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Old 09-16-2010, 11:38 AM   Thread Starter #2
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Default Re: How to Install Walbro 255 Fuel Pump

More detailed steps(Courtesy of Chunger from Maxima.org):


WORK IN A WELL VENTILATED AREA!

1. Remove the FUEL PUMP FUSE from the fuse box underneath the dash.

2. Start the engine to use up the remaining fuel under pressure in the fuel line. Wait for engine to stall.

3. Disconnect the GROUND CABLE from car battery.

4. Reinstall fuel pump fuse back into fuse box.

5. Open fuel door and take off gas cap to release air pressure in fuel tank.


Installtion of Fuel Pump

1. COMPARE the OEM and Walbro fuel pump. Remove the short fuel hose from OEM pump and place it onto the Walbro pump in the same position.

2. Carefully remove the pickup assembly RETAINER. Remove the pickup assemble. If pickup SCREEN is dirty, clean it. REINSTALL the pickup assembly onto the Walbro in the same position. Make sure the pickup is firmly attached to fuel pump!

3. Carefully replace new Walbro/pickup assembly back into lower "basket" assembly. Start 90o and carefully turn clockwise to reposition the pickup underneath "basket". The lower portion of fuel pump needs to be positioned first, then you can push down slightly to get top portion to FIT SNUGLY. If it is not positioned correctly, the WHITE BRACKET COVER TOP will not snap back in correctly. Place the top cover back on by starting with the hinged side. Do not force. You may have to reposition the pump.
3.
4. Replace old gas tank O-Ring with new O-Ring.

5. Reposition sender assembly over gas tank by rotating it correctly over mounting holes to avoid kinking fuel hose to fuel pump. Reconnect the HARNESS AND FUEL LINE making sure wiring is routed the same way it was taken off earlier (away from float sender unit so as to not prevent its proper operation).

6. Slowly lower seat assembly over gas tank and O-Ring. There should be no resistance or fuel hose may be kinked underneath.

7. Reconnect the 2 hoses and HOSE CLAMPS to assembly top. If you mistakenly swap these, the engine will not start.

8. Reconnect the 2 ELECTRICAL HARNESSES.

9. Refasten the TOP COVER.

10. Replace Rear seats.

11. Reconnect ground on car battery.

FINAL CHECK:

Start car temporarily then shut off engine. Note if there is any smell of gasoline. You may have to remove the top cover if hose clamps were not fastened tight enough.
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Old 09-16-2010, 04:08 PM   #3
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Default Re: How to Install Walbro 255 Fuel Pump

acutally before you start the car , you should just turn the KEY to the ON postion,

you need to let it the pump prime itself,

with the walbro ( which is a copy of a bosch pump ) you will hear the sucker on,

Prime it first , then start the car.
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Old 09-16-2010, 04:26 PM   #4
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Default Re: How to Install Walbro 255 Fuel Pump

since when is ur car red
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Old 09-16-2010, 05:03 PM   #5
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Default Re: How to Install Walbro 255 Fuel Pump

Originally Posted by iirishsamuraii View Post
since when is ur car red
er ? me or Eddy ?

the pics is of Chernmaxs ride
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Old 11-23-2010, 12:43 AM   #6
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Default Re: How to Install Walbro 255 Fuel Pump

Dumb question, but what does upgrading your fuel pump actually do? Do you pump more fuel which means you fill up quicker and get less MPG? I have considered doing this but not sure what the purpose is.
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Old 11-23-2010, 12:49 AM   #7
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Default Re: How to Install Walbro 255 Fuel Pump

Q
Originally Posted by iirishsamuraii View Post
since when is ur car red
A
Originally Posted by EddyMaxx View Post
Member Credit: Chernmax
lolllll good write up
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