350 tbi timing off.. anyone can help? - 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 10-05-2008, 08:32 PM
Registered User
 
Join Date: Oct 2008
Location: indiana
Posts: 3
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
350 tbi timing off.. anyone can help?

i have a 94 silverado w/ a 350 tbi it was running good in idle but when to drive off it felt like it was going to die and after certain speed ran w no problem. then my friend told me that the time was off he tried to adjust it with the timing light but it seems like it got worse, after adjusting it and shut it off the truck wont start or you hear the starter hitting the flywheel if you turn the distributor then it stars but idles bad if you move the distributor the way it idles good you can hear like explosions trough the exhaust and we cant get it right. does anyone know what would be the problem and how it could be fixed?

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 10-05-2008, 08:43 PM
espo1980's Avatar
If it doesn't fit force it!
 
Join Date: Sep 2008
Location: Baltimore MD
Age: 33
Posts: 28
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
new engine build?

Need to know if you pulled the engine or replaced parts? Something else to go on. If Its a new engine, you need to recheck all the plug wires and fire order. Distributor could be in a tooth off.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 10-05-2008, 09:00 PM
kc0kfg's Avatar
kc0kfg
 
Last photo:
Join Date: Apr 2007
Location: Marietta MN
Age: 44
Posts: 96
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
Quote:
Originally Posted by dubmission
then my friend told me that the time was off he tried to adjust it with the timing light but it seems like it got worse, after adjusting it and shut it off the truck wont start or you hear the starter hitting the flywheel if you turn the distributor then it stars but idles bad if you move the distributor the way it idles good you can hear like explosions trough the exhaust and we cant get it right. does anyone know what would be the problem and how it could be fixed?

When your friend adjusted the "timing" was the timing wire distributor unplugged?

It's a single wire leading to the distributor on the pass side of the harness closest to the distributor, if that was not unpluged when you turned the static timing of the distributor the computer will try and fight what you are doing.

The wire needs to be unplugged then the distributor timing can be adjusted, then turn the truck off, plug the wire back in and the ecm will now use this point as its starting point.

When you went to adjust it was it lose? if it was tight I would look else where for the issue.

Brian kc0kfg
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 10-05-2008, 09:01 PM
Registered User
 
Join Date: Oct 2008
Location: indiana
Posts: 3
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
the motor never came off all we did was to change spark plugs, distributor cap, distributor rotor, oil change basically a tune up. we also replaced the fuel pump and fuel filter.
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 10-05-2008, 09:04 PM
Registered User
 
Join Date: Oct 2008
Location: indiana
Posts: 3
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by kc0kfg
When your friend adjusted the "timing" was the timing wire distributor unplugged?

It's a single wire leading to the distributor on the pass side of the harness closest to the distributor, if that was not unpluged when you turned the static timing of the distributor the computer will try and fight what you are doing.

The wire needs to be unplugged then the distributor timing can be adjusted, then turn the truck off, plug the wire back in and the ecm will now use this point as its starting point.

When you went to adjust it was it lose? if it was tight I would look else where for the issue.

Brian kc0kfg
i dont think that the wire was unplugged. also when we were using that timming light it lloked like it was mis-firing or at least thats the way the light was shwing

Last edited by dubmission; 10-05-2008 at 09:10 PM.
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
350 TBI to 350 TBI VORTEC SWAP IWANTMOREHP Engine 7 05-02-2012 06:40 AM
Power and Fuel Econ Porblems with NEW STOCK 1994 350 TBI MuscleBlock81 Engine 12 09-08-2009 11:01 PM
1989 Chevy 350 TBI Timing Primevci Engine 9 01-31-2009 05:13 PM
Timing a GMC 2.5 with TBI ronrw2b2 Engine 3 08-27-2004 09:25 PM
Timing on 350 jeff germano Engine 5 10-04-2002 06:56 AM


All times are GMT -6. The time now is 11:11 PM.


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.