fuel flow diagrams
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fuel flow diagrams
Does anyone have a half decent fuel flow diagram for a 97 7.3 PSD with an Auto 4x4 dual tank.
I would like to have this for my computer as well I got a feeling I'm sucking some air cause I've done everything from the Hypex line to the oil sensor on the left front head(cant remember the name) and checking all the wiring, with huge improvments my Idle has made but still has a slight loop to it and still sounds like something is not working quite right. Want to cover my bases before looking at injectors.
Lastly, I got to change those blue hoses on my fuel pump cause their cracked pretty good, just noticed and has anybody heard of a mod to improve the fuel return on our engines??? I think I remember reading somewhere that this was a problem
I would like to have this for my computer as well I got a feeling I'm sucking some air cause I've done everything from the Hypex line to the oil sensor on the left front head(cant remember the name) and checking all the wiring, with huge improvments my Idle has made but still has a slight loop to it and still sounds like something is not working quite right. Want to cover my bases before looking at injectors.
Lastly, I got to change those blue hoses on my fuel pump cause their cracked pretty good, just noticed and has anybody heard of a mod to improve the fuel return on our engines??? I think I remember reading somewhere that this was a problem
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From: MICHIGAN
<TABLE cellSpacing=0 cellPadding=3 width="70%" border=1><TBODY><TR><TH vAlign=bottom>Item</TH><TH vAlign=bottom>Part Number</TH><TH vAlign=bottom>Description</TH><TR vAlign=top><TD>1</TD><TD>9155</TD><TD>Fuel Filter</TD></TR><TR vAlign=top><TD>2</TD><TD>—</TD><TD>Tank Return Orifices (Part of 9155)</TD></TR><TR vAlign=top><TD>3</TD><TD>—</TD><TD>Strainer Assembly (Part of 9155)</TD></TR><TR vAlign=top><TD>4</TD><TD>—</TD><TD>Fuel Pressure Regulator (Part of 9155)</TD></TR><TR vAlign=top><TD>5</TD><TD>—</TD><TD>Schrader Valve (Part of 9155)</TD></TR><TR vAlign=top><TD>6</TD><TD>6049</TD><TD>Cylinder Heads</TD></TR><TR vAlign=top><TD>7</TD><TD>9A564</TD><TD>Fuel Return Tubes</TD></TR><TR vAlign=top><TD>8</TD><TD>—</TD><TD>Piston Stage (Part of 9350)</TD></TR><TR vAlign=top><TD>9</TD><TD>9002</TD><TD>Fuel Tank</TD></TR><TR vAlign=top><TD>10</TD><TD>—</TD><TD>Diaphragm Stage (Part of 9350)</TD></TR><TR vAlign=top><TD>11</TD><TD>—</TD><TD>Fuel Filter Vacuum Switch (Part of 9155)</TD></TR></TBODY></TABLE>
Your mechanical pump shouldn't be adding air to the fuel, electric fuel pumps generally have this problem.
Your mechanical pump shouldn't be adding air to the fuel, electric fuel pumps generally have this problem.
Last edited by cookie88; Aug 5, 2006 at 03:10 PM.
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Cuda_Jim I was thinking the same thing, it's not air in the fuel.
The first thing that came to my mind is a problem with the HPOP system. The pressure sensor getting flaky or something like that.
The first thing that came to my mind is a problem with the HPOP system. The pressure sensor getting flaky or something like that.
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Kwik, For some reason I double posted the picture above, Can you get rid of one of them please?
David, I just noticed the diagram doesn't show the tank switcher valve. Could be a source for air to enter the fuel system?
but I gotta agree with kwik. If your HPOP proves to be good you're in the market for injectors, yaahhh! more HP
David, I just noticed the diagram doesn't show the tank switcher valve. Could be a source for air to enter the fuel system?
but I gotta agree with kwik. If your HPOP proves to be good you're in the market for injectors, yaahhh! more HP
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Originally Posted by Cuda_jim
For some reason I double posted the picture above, Can you get rid of one of them please?
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Originally Posted by Kwikkordead
Cuda_Jim I was thinking the same thing, it's not air in the fuel.
The first thing that came to my mind is a problem with the HPOP system. The pressure sensor getting flaky or something like that.
The first thing that came to my mind is a problem with the HPOP system. The pressure sensor getting flaky or something like that.
Last edited by DAVID'S97F250HD; Aug 6, 2006 at 11:53 PM.
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Originally Posted by Cuda_jim
Kwik, For some reason I double posted the picture above, Can you get rid of one of them please?
David, I just noticed the diagram doesn't show the tank switcher valve. Could be a source for air to enter the fuel system?
but I gotta agree with kwik. If your HPOP proves to be good you're in the market for injectors, yaahhh! more HP
David, I just noticed the diagram doesn't show the tank switcher valve. Could be a source for air to enter the fuel system?
but I gotta agree with kwik. If your HPOP proves to be good you're in the market for injectors, yaahhh! more HP
I think I might bight the bullit and do the injector O-rings while I'm on holidays this week. What I want to do is install a clear fuel line some where and check the fuel as its entering the system for air. If thats good I pretty sure I gotta look at injectors, is it a little soon for 125,000 miles for the injectors to crap out?
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