Go Back   Ford Truck Enthusiasts Forums > Older, Classic & Antique Trucks > 1973 - 1979 F-100 & Larger F-Series Trucks
Sign in using an external account
Register Forgot Password?


1973 - 1979 F-100 & Larger F-Series Trucks Discuss the Dentsides Ford Truck

Welcome to Ford-Trucks Forums!
Welcome to Ford-Trucks.com.

You are currently viewing our forums as a guest, which gives you limited access to view most discussions and access our other features. By joining our community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join the Ford-Trucks Forums community today!





 
Reply
 
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 02-10-2006, 07:14 PM
TheMech TheMech is offline
Freshman User
 
Join Date: Feb 2006
Location: under the hood of my truc
Posts: 41
TheMech is starting off with a positive reputation.
400m vacuum problem

i just put a new Edlebrock aluminum egr manifold on my 400m and a new street avenger carb on it. hooked everything up, made sure the electric choke worked good, set the timing and started it and let it run for a little bit. it seems to studder alot, i rev the engine and there is like a pause then it revs up. i put it into drive and it starts to want to die and when i give it gas it wants to die even more, but went i start down the road its fine. pull up to a stop sign and it wants to die again, ther i have to put it into neutral to stop from killing it. oh i also put a new blaster 2 coil on it if that helps solve the problem. im open to any suggestions. im leaning more towards the vacuum leak and if so how do i find it.
Reply With Quote
  #2  
Old 02-10-2006, 09:54 PM
Mil1ion Mil1ion is offline
New User
 
Join Date: Jan 2008
Posts: 0
Mil1ion is starting off with a positive reputation.
If the hoses are old...replace them

One way to find vacuum leaks is to use some carb cleaner spray.
With the straw nozzle point and spary at every vacuum connection.

Along the seam of where the intake meets the head.

If the engine changes its running condition,there's your leak
Reply With Quote
  #3  
Old 02-11-2006, 10:12 AM
vls vls is offline
Junior User
 
Join Date: Feb 2003
Posts: 94
vls is starting off with a positive reputation.
Sure your float level is right? Vacuum gauges are cheap. Tells you a lot about an engine, but not many people use 'em anymore.
Reply With Quote
  #4  
Old 02-20-2006, 12:57 PM
TheMech TheMech is offline
Freshman User
 
Join Date: Feb 2006
Location: under the hood of my truc
Posts: 41
TheMech is starting off with a positive reputation.
i figured it out. my power valve blew. i read somewhere that when your engine backfires that it will usually blow the power valve on holley's. i just need to get a new on. thanks guys. by the way i did test for vacuume leaks and everything turned up ok, no leaks.
Reply With Quote
  #5  
Old 02-20-2006, 01:05 PM
Torque1st's Avatar
Torque1st Torque1st is offline
Posting Legend
 
Join Date: Sep 2001
Posts: 30,260
Torque1st is a splendid one to beholdTorque1st is a splendid one to beholdTorque1st is a splendid one to beholdTorque1st is a splendid one to beholdTorque1st is a splendid one to beholdTorque1st is a splendid one to beholdTorque1st is a splendid one to beholdTorque1st is a splendid one to behold
Newer Holley carbs have a check valve that is "supposed" to stop that. There is a retrofit kit for that also for the older carbs. The power valve is a major weakness on Holley and Motorcraft carbs. Then you add the leaky gaskets... Now you know why I use Edelbrock!
__________________
"Beam me up Scotty. There's no intelligent life down here..."
Reply With Quote
  #6  
Old 02-20-2006, 01:17 PM
TheMech TheMech is offline
Freshman User
 
Join Date: Feb 2006
Location: under the hood of my truc
Posts: 41
TheMech is starting off with a positive reputation.
yeah and i just bought this street avenger a couple months ago too, and i also use an edelbrock on my other truck no problems with that. haha thanks
Reply With Quote
Old 02-20-2006, 01:17 PM
 
 
 
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
issues getting engine swap to run, help. jburroughs12 1948 - 1956 F1, F100 & Larger F-Series Trucks 201 06-01-2011 09:07 AM
truck won't idle after header install cj96f150 Ford Inline Six, 200, 250, 4.9L / 300 19 11-17-2008 03:15 PM
Did I buy the wrong carb? Help please carb gurus! Hellbore Fuel Injection, Carburetion & Fuel System 3 05-23-2006 06:22 PM
400 rough at idle firehawk108 335 Series- 5.8/351M, 6.6/400, 351 Cleveland 3 01-20-2005 10:50 AM
holley carb acting up? wants to stall jimbo81587 Fuel Injection, Carburetion & Fuel System 2 04-29-2004 08:59 AM


Go Back   Ford Truck Enthusiasts Forums > Older, Classic & Antique Trucks > 1973 - 1979 F-100 & Larger F-Series Trucks

Tags
1973, 1979, 400, 400m, backfire, carb, check, engine, f250, factory, ford, holley, motor, ranchero, set, vaccum, vacuum

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not 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 On
Trackbacks are On
Pingbacks are On
Refbacks are On

Forum Jump



All times are GMT -5. The time now is 09:32 AM.


Powered by vBulletin® Version 3.8.7 AC1
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Advertising - Terms of Use - Privacy Statement - Jobs
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. FordŽ is a registered trademark of the Ford Motor Company.

vbulletin Admin Backup