Qjet stumble 360 Amc - Page 2 - 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
  #16 (permalink)  
Old 08-28-2012, 08:32 AM
UngerMarkus's Avatar
TuckīnīRoller
 
Last photo:
Join Date: Mar 2009
Location: AUSTRIA
Age: 27
Posts: 90
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I put duct tape over the air valves and the hanger to prevent them from opening.

I did what you said and checked the PP with a screwdriver. It seems to work smoothely.

As for the casting number, Iīm gonna check that and let you know. As far as I know itīs a brand new Jet Carb set up for Smallblock Truck engines.

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #17 (permalink)  
Old 08-28-2012, 08:36 AM
Registered User
 
Join Date: Aug 2012
Posts: 110
Wiki Edits: 0

Thanks: 41
Thanked 1 Time in 1 Post
Ok you do know the secondaries still open, even when you tape the air valve off?
Reply With Quote Quick reply to this message
  #18 (permalink)  
Old 08-28-2012, 09:19 AM
RWENUTS's Avatar
Registered User
 
Last photo:
Join Date: Nov 2011
Location: Nanaimo, BC, Canada
Age: 62
Posts: 1,873
Wiki Edits: 0

Thanks: 47
Thanked 200 Times in 189 Posts
How many turns on the screw are you at on the secondary air valve. Measured from zero adjustment. I tap on the air valve and when it won't try to close I call that zero.
Reply With Quote Quick reply to this message
  #19 (permalink)  
Old 08-28-2012, 01:38 PM
UngerMarkus's Avatar
TuckīnīRoller
 
Last photo:
Join Date: Mar 2009
Location: AUSTRIA
Age: 27
Posts: 90
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Thanks for your replies, guys!

I did what you suggested me and checked the PP with a screwdriver. It works nicely.
Unfortunately I forgot to write down the casting number. But it is a Jet performance light truck stage1 carb.

The APT was screwed out 4 turns. I tried everything from completely seated to 5 turns out in 1/4 turn increment. But it didn't make much difference. I also advanced the ignition a bit.

In D it drives badly. When I locked it in first gear it accelerates good as long as you open the throttle progressively.
When I floor it, it stutters badly and does not pick up speed. When you let off the gas a bit, it accelerates again.
Reply With Quote Quick reply to this message
  #20 (permalink)  
Old 08-28-2012, 01:53 PM
UngerMarkus's Avatar
TuckīnīRoller
 
Last photo:
Join Date: Mar 2009
Location: AUSTRIA
Age: 27
Posts: 90
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
From the point where the spring doesn't close the air valve anymore I loaded the spring with one full turn.
Reply With Quote Quick reply to this message
  #21 (permalink)  
Old 08-28-2012, 02:36 PM
RWENUTS's Avatar
Registered User
 
Last photo:
Join Date: Nov 2011
Location: Nanaimo, BC, Canada
Age: 62
Posts: 1,873
Wiki Edits: 0

Thanks: 47
Thanked 200 Times in 189 Posts
Getting stumped!!
Blow some carb cleaner thru the air bleeds that are located between the choke housing and the secondary air valve. In photo 2 in the link you see them 4 tubes that are attached to the top plate. Best to remove the top plate to check they're clear. I found one once that was pinched off.
You could try blowing thru them without lifting the lid.
Diagnostic Dilemmas: Servicing Quadrajet Carburetors: Underhood Service
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
AMC/Jeep 360 Gun Laker Engine 0 08-17-2011 09:48 PM
AMC 360 v8 jim martin Hotrodding Basics 1 12-16-2010 10:57 AM
amc 360 fullof questions Engine 6 09-05-2008 04:55 PM
360 Mopar stumble... BigBlockBanjo Engine 2 04-20-2007 11:12 AM
AMC 360 in a '92 metro? 73 Nova Guy Hotrodders' Lounge 35 02-26-2003 11:23 PM


All times are GMT -6. The time now is 07:31 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.