holly 650 no full return - 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
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 05-17-2007, 07:22 AM
Registered User
 
Join Date: Apr 2007
Location: canada
Posts: 21
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
holly 650 no full return

I have a holly 650 on a stock ford 302 intake an it recently started giving me problems with a vacuum leak between the carb and the spacer so i changed the gasket of coarse but when i put it back together and tightened it all down i no longer get full return on the throttle it stays open just enough to leave my idle at 1100 rpm instead of 800. If i loosen it back off then i get full return but also a vacuum leak ..could i be getting flex somewhere that is binding the throttle rod .?????I even went as far as replacing the gaskets again in case the gasket was faulty but wound up with the same problem ...
I have the right slack in the throttle cable so that's not the problem either
and i put on a brand new return spring (as well as retrying the old one) and still have the same problem.. not sure what else to try.....the carb is 8 years old now could it just be time for a complete rebuild ?????? thanks for any help

omega69...

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 05-17-2007, 11:07 AM
aka Duke of URL
 
Last wiki edit: Finding vacuum leaks Last photo:
Join Date: Oct 2001
Location: Rockville, MD
Posts: 4,821
Wiki Edits: 1

Thanks: 0
Thanked 0 Times in 0 Posts
Check for warped venturi base plate warp-carb mounting pad warp, binding of the throttle shaft(s) and/or possible catching of venturi plates on base gasket.

Try to find problem with linkage disconnected. It may also be a binding bell crank or throttle cable.
Reply With Quote Quick reply to this message

Recent Engine posts with photos

Quick Reply
Message:
Options

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:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

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
Holley 6425 650 CFM 2 barrel lluciano77 Engine 15 01-28-2011 11:26 AM
Port or Full time vacuum cool rockin daddy Engine 129 10-05-2010 03:00 PM
Full Frame GM cars? Lee Hulick General Rodding Tech 4 03-17-2004 09:27 AM
GM Front Diff. Reliability For Full Time Use. M&M CUSTOM Transmission - Rearend 4 10-31-2003 05:36 PM
T-350 Modify stock valve body to full manual Mr. Horsepower Transmission - Rearend 7 05-26-2003 10:21 AM


All times are GMT -6. The time now is 06:02 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.