Quadrajet 4bbl/Edelbrock street fuel pump- too much fuel pressure? - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum

Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Engine
User Name
lost password?   |   register now

LinkBack Thread Tools
  #1 (permalink)  
Old 11-29-2008, 05:10 PM
Bob Turner's Avatar
New Member
Join Date: Nov 2004
Location: Phoenix, Arizona USA
Age: 45
Posts: 16
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Quadrajet 4bbl/Edelbrock street fuel pump- too much fuel pressure?

Well guys, after 3 years, I installed an ISKY 216/216 camshaft in my 454, got it back in the '74 Corvette and all summer I've been getting ready to fire it back up and break in the camshaft.

So, today was the day. Everything went fine and I managed to run the motor for 20 min at 2500rpms, breaking in the cam.

The only problem was that fuel was dripping out of the accelerator pump and the vent tube (not enough to stall the motor at 2500 but difficult to keep idling).

I cleaned up the gasoline and pushed the car back in the garage.

I believe that the Quadrajet was getting too much fuel pressure from the Edelbrock street fuel pump (worked great with the Demon a few years ago).

The carb was rebuild last Feb and literally has only 20 miles on it- and, NO problems with fuel coming out the top. I did use the carb on my 350 before deciding to install the 454 back in, so I do know that it ran well.

So, I am going to order a stock fuel pump and steel line.

What do you guys think? Am I correct in my thinking that there's too much pressure?


Bob Turner

Reply With Quote Quick reply to this message
Sponsored Links
  #2 (permalink)  
Old 11-29-2008, 06:54 PM
Cape Cod Bob's Avatar
Registered User
Last wiki edit: How to title a hot rod Last photo:
Join Date: Jul 2007
Location: MA
Posts: 1,293
Wiki Edits: 1

Thanks: 41
Thanked 54 Times in 43 Posts
Bob, I just posted a similar problem I am having with a Q jet. I did not try to start because I wanted to see if the pump over pumped or not and it did. Its a napa 4-6 lbs. I'll have to get a gauge to check it.
Let us know how u make out.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 11-29-2008, 11:50 PM
Registered User
Last photo:
Join Date: Aug 2006
Location: Los Angeles
Posts: 47
Wiki Edits: 0

Thanks: 0
Thanked 2 Times in 1 Post
First thing you need to do is to put a fuel pressure gauge to it.
Reply With Quote Quick reply to this message

Recent Engine posts with photos

Quick Reply

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Please select your insurance company (Optional)


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Fuel pressure 7psi = Q-jet flooding? Dave K Engine 18 11-30-2008 10:39 PM
Converting to EFI 65fish Engine 12 11-10-2007 07:17 AM
smaller fuel pump body needed chevy mikee Engine 7 08-28-2007 01:23 PM
carburetor leaking; fuel tank needs cleaning islandman General Rodding Tech 7 03-17-2007 06:03 PM
Nitrous Problem, Maybe fuel pump? esears Engine 7 05-02-2005 05:21 AM

All times are GMT -6. The time now is 01:01 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.