Fuel starvation?????
Thread Starter
|
Freshman User
Joined: Jan 2012
Posts: 41
Likes: 0
Fuel starvation?????
Ok. 79 f150 4x4 460 .60 over. Stock fuel pump. Edelbrock 600 cfm. Problem is..... It starts and runs fine. But if you shut it down and start up a few minutes later, it acts like it's not getting enough fuel if you get on it a bit. Also maybe separate problem, after sitting for a few days, all the fuel goes back to tank and it takes a bit to build pressure back up. Help is greatly appreciated and thanks in advance.
Laughing Gas
Joined: Mar 2011
Posts: 811
Likes: 1
From: West Central Southern MN
Someone else will provide better input, as I don't know a whole lot about those carbs, but here is my initial response.
The carb should be big enough to handle that motor. Were you running this carb before the rebuild?
I would try adjusting your slow speeds and see if it improves, and as for the fuel running back out, maybe the seats? Maybe a bad gasket?
Can you smell gas after you shut it off, or does it just leak back through the line, or into the intake?
Again, I hope someone else can provide some advice as well.
The carb should be big enough to handle that motor. Were you running this carb before the rebuild?
I would try adjusting your slow speeds and see if it improves, and as for the fuel running back out, maybe the seats? Maybe a bad gasket?
Can you smell gas after you shut it off, or does it just leak back through the line, or into the intake?
Again, I hope someone else can provide some advice as well.
Thread Starter
|
Freshman User
Joined: Jan 2012
Posts: 41
Likes: 0
Someone else will provide better input, as I don't know a whole lot about those carbs, but here is my initial response.
The carb should be big enough to handle that motor. Were you running this carb before the rebuild?
I would try adjusting your slow speeds and see if it improves, and as for the fuel running back out, maybe the seats? Maybe a bad gasket?
Can you smell gas after you shut it off, or does it just leak back through the line, or into the intake?
Again, I hope someone else can provide some advice as well.
The carb should be big enough to handle that motor. Were you running this carb before the rebuild?
I would try adjusting your slow speeds and see if it improves, and as for the fuel running back out, maybe the seats? Maybe a bad gasket?
Can you smell gas after you shut it off, or does it just leak back through the line, or into the intake?
Again, I hope someone else can provide some advice as well.
Cargo Master
Joined: Nov 2009
Posts: 2,364
Likes: 117
From: starship enterprise
Here is what happens: Fuel in bowl gets hot and vaporizes. Fuel also evaporates so that is why the need for all the cranking. If there is no spacer, add a carb spacer, phenolic is best but anything would help, also, get a lower temp thermostat. also, get an aluminum intake if budget allows. With all of this nice gasoline we buy today, that turns into vapor before our engine has a chance to burn it, thus creating the vapors. This is because of hydrocarbon in the fuel, or lack there of, and allowing for a vapor to boil out of the carb. Also, edelbrocks with their integrated float bowl design are notorious for this so a holley will actually help due to the float bowls being exposed on the ends and bigger, more area for air to cool the fuel.
Thread Starter
|
Freshman User
Joined: Jan 2012
Posts: 41
Likes: 0
Here is what happens: Fuel in bowl gets hot and vaporizes. Fuel also evaporates so that is why the need for all the cranking. If there is no spacer, add a carb spacer, phenolic is best but anything would help, also, get a lower temp thermostat. also, get an aluminum intake if budget allows. With all of this nice gasoline we buy today, that turns into vapor before our engine has a chance to burn it, thus creating the vapors. This is because of hydrocarbon in the fuel, or lack there of, and allowing for a vapor to boil out of the carb. Also, edelbrocks with their integrated float bowl design are notorious for this so a holley will actually help due to the float bowls being exposed on the ends and bigger, more area for air to cool the fuel.
Last edited by jssparkyjr; Apr 29, 2014 at 06:41 PM. Reason: Spelling
Thread
Thread Starter
Forum
Replies
Last Post
BTFordGuy302
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
14
Oct 25, 2015 01:38 PM
datchew
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
5
Dec 20, 2009 06:38 PM
Innovative Detailing
FE & FT Big Block V8 (332, 352, 360, 390, 406, 410, 427, 428)
16
Nov 2, 2009 05:19 PM
