New Fuel Pump

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Nov 9, 2008 | 09:41 AM

#16

OUTPLAYN

Junior User

Joined: Oct 2006

Posts: 70

Likes: 0

From: Genoa,IL

Quote:

Originally Posted by PaysonPSD

I felt that my truck was not getting enough fuel at the high end of WOT runs. I wanted to replace the fuel pump. After reading this post (LINK) by Curtis (Pocket) I decided to go with a Walbro GSL 392. Thank you Curtis for posting your findings and install tips. You saved my non-mechanical brain a lot of guess work.

I found the pump on Ebay for $118.99 with free shipping (LINK). Very fast shipping from this seller. Ordered on Friday and received on Monday.

The SOTP meter said there was an improvement. I don't have an in-cab fuel pressure gauge so I do not know what the WOT pressure was. Here are the static fuel pressure and boost readings before and after the new pump.

Stock Fuel Pump:

KOEO fuel pressure 61 PSI (I had previously shimmed the FPR)

WOT Test:
20 PSI max boost with red line connected
22 PSI max boost with red line disconnected

With Walbro GSL 392 Fuel Pump:

KOEO fuel pressure 72 PSI

WOT Test:
22 PSI max boost with red line connected
26 PSI max boost with red line disconnected

Both WOT Tests were up the same 4% grade in 80E.

I didn't do a detailed write-up because it is pretty straight forward, but here's a LINK with pics and tips on install. .

FYI - Still running stock sticks, stock turbo and stock 15° HPOP

OK...I have to ask the simple dumb uestio of the day. Where did you get that filter?