carb/intake/engine problems - Pirate4x4.Com : 4x4 and Off-Road Forum
 
Pirate4x4.Com : 4x4 and Off-Road Forum  

Go Back   Pirate4x4.Com : 4x4 and Off-Road Forum > General Tech > General 4x4 Discussion
Notices

Reply
 
Share LinkBack Thread Tools Display Modes
Old 10-15-2002, 01:28 PM   #1 (permalink)
Registered User
 
Join Date: Aug 2001
Member # 6234
Posts: 3,173
carb/intake/engine problems

heeeeellpp

as much as i like my truck being a fireworks display (dad's missing some eyebrows and there are scorch marks on the garage roof), i would like it to run.

here's the story...

swapped in new lifters and pushrods over the weekend. i had an offenhauser dual port intake and holley 750 that just happened to be lying around *grin* and decided to slap those on too.

all looked well. engine had bright shiny chrome/aluminum intake and carb just begging to get muddy and looked ready to start. primed with both oil and coolant

so i go to start her, let the fuel pump for about 15-20 seconds and she fires right up. unfortunately, i get this huge backfire and the engine dies.

so i can start her up, but she dies real quick after that, like there's no fuel or air flow. i need to break in these lifters the proper way, as opposed to having them turn into metal shavings in my oil pan.

help? what's wrong with her? should i swap on the old intake and carb and see if i can get it to run like that?

thanks
WillyPete is offline   Reply With Quote Quick reply to this message
Old 10-15-2002, 03:42 PM   #2 (permalink)
Registered User
 
2stroke's Avatar
 
Join Date: Dec 2001
Member # 8981
Posts: 2,721
did u pull the dist. to do the job? sounds like its off a tooth.
2stroke is offline   Reply With Quote Quick reply to this message
Sponsored Links
Old 10-16-2002, 11:05 PM   #3 (permalink)
Registered User
 
Join Date: Jan 2002
Member # 9468
Location: Eldorado BFE, East of sac
Posts: 3,668
Send a message via ICQ to masterbeavis Send a message via AIM to masterbeavis Send a message via MSN to masterbeavis Send a message via Yahoo to masterbeavis
I would double check your timing, put the old carb back on, and check for any hoses/lines that are not hooked up. While you have the new carb off, replace the power valve. The newer ones have "power valve blowout protection," however I have no idea how to tell if a carb is set up that way. You can kinda check the timing before you start the motor, you can crank the motor while using the timing light. As long as the motor doesnt fire off, you can get it within a few degrees. I am not sure how to keep the motor from starting without disabling the elec system, unless you did what I did last time I put on a carb.... forget to hook up the PCV hose to the back of the carb. OOPS!
masterbeavis is offline   Reply With Quote Quick reply to this message
 
Old 10-17-2002, 01:05 AM   #4 (permalink)
Registered User
 
500 HORS's Avatar
 
Join Date: Jul 2000
Member # 1221
Location: Sacramento, CA
Posts: 391
its a timing thing.
Also, unless you've got 500HORS in the engine a 750CFM carb is way big. If its a Holley get a fuel regulator to keep it at 5lbs for the street and turn it down to 1 or 2 for the trail.
__________________
500 HORS
CRAIG
500 HORS is offline   Reply With Quote Quick reply to this message
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Pirate4x4.Com : 4x4 and Off-Road Forum forums, you must first register.
Please enter your desired user 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.

** A VERIFICATION EMAIL IS SENT TO THIS ADDRESS TO COMPLETE REGISTRATION!! **

Email Address:
Insurance
Please select your insurance company (Optional)

Log-in


Thread Tools
Display Modes

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



All times are GMT -7. The time now is 09:48 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.0 ©2011, Crawlability, Inc.
User Alert System provided by Advanced User Tagging (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.