Bucking and jerking not running right - Page 6 - 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> Hotrodding Basics
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #76 (permalink)  
Old 03-20-2013, 06:08 PM
LATECH's Avatar
Hotrodders.com Moderator
 

Last journal entry: Motor - vator
Last photo:
Join Date: Jul 2010
Location: Northeast Pennsylvania
Posts: 5,301
Wiki Edits: 0

Thanks: 220
Thanked 272 Times in 252 Posts
I dont have values for the EGR. You can however, if you suspect the EGR , would be to cut a pop can open and make a blocker plate , for the EGR. Shape it like the egr gasket and slip it inbetween the intake and the EGR to block any flow or leakage. Super simple.
I am with bogie, my thoughts are problems with the injectors. Months of setting with todays quality fuels in them...LOL.
Probably corroded to death

    Advertisement
__________________
Fact is stranger than Fiction

Last edited by LATECH; 03-20-2013 at 06:27 PM.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #77 (permalink)  
Old 03-20-2013, 06:43 PM
Registered User
 
Last photo:
Join Date: Mar 2012
Posts: 87
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Thanks Guys. I will check it out and let you know what I find.
Reply With Quote Quick reply to this message
  #78 (permalink)  
Old 03-20-2013, 07:44 PM
Registered User
 
Last photo:
Join Date: Mar 2012
Posts: 87
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I just uploaded the pic of my plugs. Its in my profile. I hope you all can see them.
Reply With Quote Quick reply to this message
  #79 (permalink)  
Old 03-21-2013, 06:13 PM
Registered User
 
Last photo:
Join Date: Mar 2012
Posts: 87
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I was just wondering what you all thought of my spark plugs. Let me know what you all think.
Reply With Quote Quick reply to this message
  #80 (permalink)  
Old 03-21-2013, 06:15 PM
Registered User
 
Last photo:
Join Date: Apr 2007
Location: Seattle, Wa
Posts: 6,919
Wiki Edits: 0

Thanks: 4
Thanked 471 Times in 404 Posts
Quote:
Originally Posted by tommyboy8072002 View Post
I was just wondering what you all thought of my spark plugs. Let me know what you all think.
You link won't load on my machine.

Bogie
Reply With Quote Quick reply to this message
  #81 (permalink)  
Old 03-21-2013, 06:15 PM
LATECH's Avatar
Hotrodders.com Moderator
 

Last journal entry: Motor - vator
Last photo:
Join Date: Jul 2010
Location: Northeast Pennsylvania
Posts: 5,301
Wiki Edits: 0

Thanks: 220
Thanked 272 Times in 252 Posts
# 3 looks excessivley rich , 4 and six look pretty good, the rest all look somewhat rich.Looks like a fuel imbalance problem.
I would be looking real hard at the injectors.
__________________
Fact is stranger than Fiction
Reply With Quote Quick reply to this message
  #82 (permalink)  
Old 03-21-2013, 06:43 PM
Registered User
 
Last photo:
Join Date: Mar 2012
Posts: 87
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Hey La Tech Do you think a ground wire would cause that? Sorry about that BOGIE IM not sure how to post a pic on here .
Reply With Quote Quick reply to this message
  #83 (permalink)  
Old 03-21-2013, 07:15 PM
Registered User
 
Last photo:
Join Date: Apr 2007
Location: Seattle, Wa
Posts: 6,919
Wiki Edits: 0

Thanks: 4
Thanked 471 Times in 404 Posts
Quote:
Originally Posted by tommyboy8072002 View Post
Hey La Tech Do you think a ground wire would cause that? Sorry about that BOGIE IM not sure how to post a pic on here .
You have to be a bit careful when reading plugs, fouled plugs can be too much fuel, oil, too cold a heat range, missfiring, leaking valves, wiped out cam lobes.

The only thing the crud tells you is one or more of those things are not working right. When you get some messed up and others not it's a pretty (especially if this is 180 degree intake and the fouling is not linked to one plane or the other) good indicator that the ignition is messing up but this ain't proof positive. On the other hand if the fouling tends to be common on cylinders feeding from one of the two intake planes, it raises the odds that fueling isn't consistent on one side of the carb/TBI injectors.

Bogie
Reply With Quote Quick reply to this message
  #84 (permalink)  
Old 03-21-2013, 07:25 PM
LATECH's Avatar
Hotrodders.com Moderator
 

Last journal entry: Motor - vator
Last photo:
Join Date: Jul 2010
Location: Northeast Pennsylvania
Posts: 5,301
Wiki Edits: 0

Thanks: 220
Thanked 272 Times in 252 Posts
Given that he tuned it up and still has the same issue , I am leaning to the only thing left here.The spider (injectors) are showing their age.
Number 3 plug is obviously fuel as it is Black.
It could be an ignition problem....but he allready changed all that and has the same problem.
IIRC he said he allready performed a compression test.
__________________
Fact is stranger than Fiction
Reply With Quote Quick reply to this message
  #85 (permalink)  
Old 03-21-2013, 08:28 PM
Registered User
 
Last photo:
Join Date: Mar 2012
Posts: 87
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Yes I did a compression test . I can bump the key and it starts right up . I started pulling things apart to get to the injectors. I found a black ground wire coming out of the wiring harness. I will hook it up tomorrow and let you all know.

Last edited by tommyboy8072002; 03-21-2013 at 08:44 PM.
Reply With Quote Quick reply to this message
  #86 (permalink)  
Old 03-21-2013, 09:39 PM
Registered User
 
Last photo:
Join Date: Mar 2012
Posts: 87
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
fixed the ground wire. Runs better still popping. I am still going to spend the extra money and buy new injectors, Plugs ,wires, rotor and cap
Reply With Quote Quick reply to this message
  #87 (permalink)  
Old 03-21-2013, 09:50 PM
Registered User
 
Last photo:
Join Date: Mar 2012
Posts: 87
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Bogie here is what the plugs look like.
Attached Thumbnails
Click image for larger version

Name:	GEDC2464.JPG
Views:	53
Size:	524.0 KB
ID:	72478  
Reply With Quote Quick reply to this message
  #88 (permalink)  
Old 03-22-2013, 10:38 AM
Registered User
 
Last photo:
Join Date: Apr 2007
Location: Seattle, Wa
Posts: 6,919
Wiki Edits: 0

Thanks: 4
Thanked 471 Times in 404 Posts
Quote:
Originally Posted by tommyboy8072002 View Post
Bogie here is what the plugs look like.
Everybody but number 3 looks pretty OK, either the plug doesn't fire, bad ignition wire, bad cap, that injector or check valve is dribbling, defective spark plug, if this has a flat tappet cam I'd suspect a wiped lobe/lifter, bad guide letting a lot of oil down the stem, a valve that leaks past the seat.

Before I spent hard cash, I run a compression check. While I strongly would suspect the problem is with the injection for that cylinder, I'd stll run through the cheap and easy inspections first, I hate spending big bucks on parts only to find it was something else.

Bogie
Reply With Quote Quick reply to this message
  #89 (permalink)  
Old 03-22-2013, 08:35 PM
Registered User
 
Last photo:
Join Date: Mar 2012
Posts: 87
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Thanks Bogie. I will do another compression test. And check and see if its getting spark in #3 cylinder. I am not Shure what kind of cam is in this but I will check it out Along with cap, rotor, plug wire. I will see if the part store sells the thing to check the fuel presser

Tommy
Reply With Quote Quick reply to this message
  #90 (permalink)  
Old 03-23-2013, 12:38 PM
Registered User
 
Last photo:
Join Date: Mar 2012
Posts: 87
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
ok I did a fuel test. I am getting 60 PSI with the key on with the key off I am getting about 58 to 59 . with the truck running I am getting 50 to 55 PSI. Let me know what you all think.


Tommy
Reply With Quote Quick reply to this message

Recent Hotrodding Basics 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:
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.



« Hi, ya'll | 350 »

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
bucking while cruising. stroker444 Engine 14 05-31-2010 11:35 AM
jerking drivetrain or rearend slipping??? 89camaross Transmission - Rearend 1 09-20-2008 10:08 PM
Bucking in gear at idle Bryan59EC Engine 7 05-21-2007 06:43 AM
hard steering and jerking BadAss_Beaver Suspension - Brakes - Steering 5 11-04-2004 11:20 AM
bucking at 2100 Ktaves1971 Engine 2 06-07-2004 01:27 PM


All times are GMT -6. The time now is 10:13 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.