5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

Gas pouring out of carb

Thread Tools
 
Search this Thread
 
Old 05-25-2009, 04:37 PM
  #1  
AndrewM6097
Thread Starter
 
AndrewM6097's Avatar
 
Join Date: Nov 2006
Location:
Posts: 33
Default Gas pouring out of carb

Just got a carb rebuilt for the 302 on the mustang at napa. Worked nice for a day and now gas is shooting out of the carb. Changed the float, tapped on the bowl and no luck. Is there anything else i should check??
AndrewM6097 is offline  
Old 05-25-2009, 05:26 PM
  #2  
mjr46
D.R. THE PATHETIC DORK
 
mjr46's Avatar
 
Join Date: Jun 2007
Location: West Virginia
Posts: 30,863
Default

CHECK FLOAT ADJUSTMENT AND THE NEEDLE
mjr46 is offline  
Old 05-25-2009, 05:41 PM
  #3  
AndrewM6097
Thread Starter
 
AndrewM6097's Avatar
 
Join Date: Nov 2006
Location:
Posts: 33
Default

Honestly i dont know much about carbs... how exactly do i check those things?
AndrewM6097 is offline  
Old 05-25-2009, 05:54 PM
  #4  
Portmaster
5th Gear Member
 
Portmaster's Avatar
 
Join Date: Nov 2008
Location: SC
Posts: 2,401
Default

If it worked OK for a day and now it's shooting out of the carb it probably wont be a float adjustment. It probably has a peice of trash in between the needle and seat/ Has the car been sitting for an extended period of time?
Portmaster is offline  
Old 05-25-2009, 06:00 PM
  #5  
AndrewM6097
Thread Starter
 
AndrewM6097's Avatar
 
Join Date: Nov 2006
Location:
Posts: 33
Default

Yes the car did sit for a while so i guess that is a possibility.
AndrewM6097 is offline  
Old 05-25-2009, 06:23 PM
  #6  
mjr46
D.R. THE PATHETIC DORK
 
mjr46's Avatar
 
Join Date: Jun 2007
Location: West Virginia
Posts: 30,863
Default

also what is fuel pressure set at??
mjr46 is offline  
Old 05-26-2009, 08:55 AM
  #7  
AndrewM6097
Thread Starter
 
AndrewM6097's Avatar
 
Join Date: Nov 2006
Location:
Posts: 33
Default

I'm using a mechanical fuel pump, dont know if that makes a difference or not...
AndrewM6097 is offline  
Old 05-26-2009, 12:58 PM
  #8  
67mustang302
6th Gear Member
 
67mustang302's Avatar
 
Join Date: Apr 2007
Location: California
Posts: 10,468
Default

You need your fuel pressure to be a max of about 6.5psi at idle.
67mustang302 is offline  
Old 05-26-2009, 01:22 PM
  #9  
AndrewM6097
Thread Starter
 
AndrewM6097's Avatar
 
Join Date: Nov 2006
Location:
Posts: 33
Default

Do i need a FPR regulator with a mechanical pump? How can i adjust the fuel pressure if need be?
AndrewM6097 is offline  
Old 05-26-2009, 01:27 PM
  #10  
67mustang302
6th Gear Member
 
67mustang302's Avatar
 
Join Date: Apr 2007
Location: California
Posts: 10,468
Default

An adjustable FPR. Some pumps are internally regulated to the correct pressure, but it's not always easy to check without a gauge. You need to check yours though. But you said it was fine at first, so either something fubar'd or you got trash in the needle and seat like Portmaster mentioned.
67mustang302 is offline  


Quick Reply: Gas pouring out of carb



All times are GMT -5. The time now is 10:39 PM.