no clue whats goin on - 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 10-29-2008, 04:03 PM
Registered User
 
Join Date: Oct 2008
Location: Webster City Ia
Posts: 1
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
no clue whats goin on

Hey whats up guys i have a 1990 chevy half ton with a 350 its been backfiring through the throttle body so i figured it was the heads so i changed the heads on it. That didnt work so i changed the fuel filter and that took care of it for awhile but its started doin it again anyone think you can help me out.

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 10-29-2008, 04:17 PM
Rob Keller's Avatar
AKA:"SLOWRIDE66"take it easy!
 
Last wiki edit: How to post pictures on a forum
Last journal entry: 85 Suburban
Last photo:
Join Date: May 2004
Location: Central Florida U.S.A.
Age: 48
Posts: 4,297
Wiki Edits: 38

Thanks: 0
Thanked 1 Time in 1 Post
Welcome to HOTRODDERS.com

Well what kind of back fire up thru the top are you having?

Is it one or multiple?

Did you check the timing chain?

Did you check the firing order?

Checked for bent /sticking valves?

I have seen the pick up coil go bad on those & it will act like a spun timing chain.

What brought you the decision to change out the heads?




R
__________________
"SlowRide66"

"Illegitimis non carborundum"
Don't let the bastards grind you down!

Crankshaft Coalition Master List of Hotrodding Forums
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 10-29-2008, 04:24 PM
weirdbeard's Avatar
1976 Ranchero GT
 

Last journal entry: Almost time for the first drive!
Last photo:
Join Date: Feb 2006
Location: Ala BAMA! (Gump)
Age: 8
Posts: 1,454
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
Kind of weird to change the heads right of the bat chasing backfire.
Just saying..
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 10-29-2008, 05:24 PM
Member
 
Last photo:
Join Date: Dec 2004
Location: San Antonio, Texas
Age: 50
Posts: 4,023
Wiki Edits: 0

Thanks: 0
Thanked 24 Times in 24 Posts
lean mixture and/or retard timing. typically.
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 10-29-2008, 06:08 PM
GMC boogie's Avatar
Member
 
Last photo:
Join Date: Nov 2004
Location: Louisiana
Age: 49
Posts: 637
Wiki Edits: 0

Thanks: 1
Thanked 22 Times in 22 Posts
Check the fuel pressure...you need at least 10psi with 12-13psi being ideal.

Most likely the pump is going south.
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 11-02-2008, 01:33 AM
Double_v23's Avatar
Horsepower Enthusiast
 

Last journal entry: Finished BMOD001FH
Last photo:
Join Date: Jul 2007
Location: Mooresville, NC
Posts: 1,495
Wiki Edits: 0

Thanks: 0
Thanked 5 Times in 5 Posts
Wow, that is like saying...."I felt vibration in the brake pedal so I swapped out the front axle..." not to rag on you but you blew way past where you need to be on that one.
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 11-02-2008, 03:18 PM
Rob Keller's Avatar
AKA:"SLOWRIDE66"take it easy!
 
Last wiki edit: How to post pictures on a forum
Last journal entry: 85 Suburban
Last photo:
Join Date: May 2004
Location: Central Florida U.S.A.
Age: 48
Posts: 4,297
Wiki Edits: 38

Thanks: 0
Thanked 1 Time in 1 Post
Well he said & I quote No clue whats going on.

& if he replies maybe we can help him out.





R
__________________
"SlowRide66"

"Illegitimis non carborundum"
Don't let the bastards grind you down!

Crankshaft Coalition Master List of Hotrodding Forums
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:
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
What are these tail lights for? No clue stereodud General Rodding Tech 9 01-19-2008 08:37 AM
I've had enough, I'm goin fishin Bluepen Hotrodders' Lounge 3 07-12-2007 09:10 PM
wats goin on Toniocaprice Introduce Yourself 1 06-18-2007 01:43 AM
hey every one hows it goin im new R4MM Introduce Yourself 1 04-15-2006 02:53 PM
Fuel coming back up through EGR plate/valve.....car died......whats goin on here? Steve-0321 Engine 2 10-17-2004 08:14 PM


All times are GMT -6. The time now is 12:24 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.