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Re: Fuel pump pushrod issue ??? 440 66 Fury
[Re: moparguy1967]
#1066835
09/15/11 08:12 AM
09/15/11 08:12 AM
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Joined: Nov 2004
Posts: 2,222
Clarkston, MI
wldgtx
top fuel
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top fuel
Joined: Nov 2004
Posts: 2,222
Clarkston, MI
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Quote:
Quote:
Are you running a vapor separator? Or any kind of return line? If the return line orifice is too big it will have low pressure. Just went through this on mine. The Year One vapor separtor i bought had the return line orifice too big. Should be .060, mine was .100.
I'm just running a 6AN line from the tank to the pump. No returns or separator.
So you have a 6An line to the pump, what do you have coming off the pump and what does it go to? Do you have a FVS between the pumpo and the carb?
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Re: Fuel pump pushrod issue ??? 440 66 Fury
[Re: wldgtx]
#1066836
09/15/11 08:32 AM
09/15/11 08:32 AM
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Joined: Apr 2004
Posts: 329
Frederick, MD
moparguy1967
OP
enthusiast
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OP
enthusiast
Joined: Apr 2004
Posts: 329
Frederick, MD
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I have a 90 degree (3/8" to 6an) coming out of the pump. Then a straight 6an hose end with about 14" of 6 an braided line. The other end of the line is a 45 degree 6an hose end. That treads to an alum fuel filter. That filter then attaches to the dual feed set up for the carb. This system worked great last summer, but I've never been able to get it to run right this year. Here is a picture http://postimage.org/image/1e6heigv8/full/
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Re: Fuel pump pushrod issue ??? 440 66 Fury
[Re: moparguy1967]
#1066837
09/15/11 09:02 AM
09/15/11 09:02 AM
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Joined: Nov 2004
Posts: 2,222
Clarkston, MI
wldgtx
top fuel
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top fuel
Joined: Nov 2004
Posts: 2,222
Clarkston, MI
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I am not saying it is an absolute, but I would start by removing that filter to see if it fixes the problem. Likely it wont, but you have to start somewhere.
Have you tried removing the line from the filter to have free flow off the pump and then try turning it over to see what flow you are getting?
If not, simply run that line to a gas can to see what happens. I had the exact same issue with my 440, I determined that the larger fuel lines affect the psi, combined with the fact that I had a problem with the fuel vapor separator.
If you have free flow from the tank, to the lines to the pump, and free flow from the carb to the lines to that pressure gage to the filter, then the issue is at the filter.
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Re: Fuel pump pushrod issue ??? 440 66 Fury
[Re: moparguy1967]
#1066839
10/17/11 04:20 PM
10/17/11 04:20 PM
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Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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on a mech pump the spring controls the psi and the cam lobe just recocks the arm. If a pump that is supposed to do 6 is putting out 12 lbs it very well well have the wrong spring in it. could send it back or if you're inclined take out the pivot shaft to remove the spring & check it for tension amt if you are able to do so or see what the pump mfr recommends EDIT I missed that you have an electric pump ahead of it. Yes you'll need to regulate the psi down for sure. thought that was very off that a 6lb pump is producing 12 psi 
Last edited by RapidRobert; 10/17/11 07:30 PM.
live every 24 hour block of time like it's your last day on earth
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Re: Fuel pump pushrod issue ??? 440 66 Fury
[Re: RapidRobert]
#1066840
10/18/11 09:42 AM
10/18/11 09:42 AM
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Joined: Apr 2004
Posts: 329
Frederick, MD
moparguy1967
OP
enthusiast
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OP
enthusiast
Joined: Apr 2004
Posts: 329
Frederick, MD
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Quote:
on a mech pump the spring controls the psi and the cam lobe just recocks the arm. If a pump that is supposed to do 6 is putting out 12 lbs it very well well have the wrong spring in it. could send it back or if you're inclined take out the pivot shaft to remove the spring & check it for tension amt if you are able to do so or see what the pump mfr recommends EDIT I missed that you have an electric pump ahead of it. Yes you'll need to regulate the psi down for sure. thought that was very off that a 6lb pump is producing 12 psi
I was going to install a electric pump, if I still had not fuel pressure. Right now all I have is the mech pump.
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