stumble on take off - 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 10-12-2006, 09:00 PM
Registered User
 
Join Date: Jun 2006
Location: selah,WA
Posts: 29
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
stumble on take off

i have a 1972 hevy pickup and it has a 350 four barrell and lately it has been stumbling on the take off and thats the only time it does it. runs perfect the rest of the time. i have rebuilt the carberator but it still does it does anyone have any ideas of what it might be?

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 10-12-2006, 09:11 PM
Member
 
Last photo:
Join Date: May 2003
Location: Shreveport LA
Age: 64
Posts: 5,103
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Did you clean out the idle and transition systems real well? Sometimes a little something will get in there and partially block a passage, and that can cause an off-idle stumble.

Crummy gas can also cause a similar stumble.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 10-12-2006, 10:22 PM
underdog305's Avatar
Member
 
Join Date: Dec 2004
Location: Greer, SC
Age: 47
Posts: 154
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
It sounds like it's going lean on initial acceleration. Check your accelerator pump. You need that extra splash of gas when you get on the pedal. Shut off the engine. Pull the aircleaner off, open the throttle while looking down the throat. Look and listen for the spray of fuel. If it just dribbles.. Theres your problem. If it pumps real late that could be it too. Depending on the carb you can schedule the pump to squirt sooner or later. Check your timing too, if its to retarded that will do it as well.
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
351w off idle stumble maby ???? smitty299 Engine 8 05-13-2005 08:14 AM
off idle tip in stumble 6speedwagon Engine 2 07-27-2004 09:47 AM
Stumble off idle in park, carb or ignition problem Dubz Engine 3 05-18-2004 10:29 PM
The Stumble Theory RayBaby Engine 4 09-09-2003 09:56 AM
New member w/ Holley stumble off throttle NRens Engine 7 03-04-2003 08:17 PM


All times are GMT -6. The time now is 09:08 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.