inline fuel pump?
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inline fuel pump?
So I traded a chevy 1500 that I bought for 450 for this ford f250 7.3L powerstroke that hadn't run for a couple of years because of a fuel leak. So I found the leak fixed it installed a new mechanical pump behind d the fuel bowl and can't get it to draw any fuel. So I dropped both fuel tanks rear tank had a leak and front tank had a bad sending unit/pick up line. Would it be OK if I put a low pressure pump in the fuel line? It's supposed to draw fuel with no pump in the tank and I already ordered a inline pump just wanna check if this will hurt anything.
Thanks
Thanks
Postmaster
Joined: May 2011
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From: Monroe City in
You shouldn't need a in line pump before the mechanical pump. So are you saying that you replaced the pump and it is not filling the fuel bowl. It may take a little bit cranking to get fuel up there after the fuel tank work and all.
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really dude you have to be the annoying mother in law almost telling me what I should or shouldn't spend money on? With it help bleed air out or not!!!!!
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Hotshot
Joined: Jan 2012
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From: Southern West Virginia
Shouldn't need the electric pump to bleed air. Just fill the bowl and crank the engine. It should be fine.
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Hotshot
Joined: Dec 2005
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From: evansville in
Its just not the way to make it run again.no smart comments needed.
Postmaster
Joined: Mar 2004
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Ok ok simmer down people. IMO the electric pump may help to prime the mechanical pump. But the design of these pumps allows them to prime themselves easy enough. But here's the kicker on your $25 pump, if the pump does not pump enough fuel to keep up to the mechanical one it will cause restriction wearing the mechanical one out prematurely, also, if the electric pump dies It may cause enough restriction to keep the truck from running properly. IMO the cons out weigh the pros. But that's just my opinion. Take it or leave it, makes no difference to me.
Hotshot
Joined: Dec 2005
Posts: 14,375
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From: evansville in
Its just that the inline pump at 25$ is most likely a low pressure carb type system . the factory pump can make 70 psi or more depending on the regulator spring pressure. The stock pump pumps from tank to pump and out at a lower pressure.then to filter.from filter back to pump.then the high pressure side ships fuel to banjo bolt and to the heads. From heads to regulator across the return to tank.
If the pump can't get air/fuel past the check valves in the pump and overcome the regulator then no bleeding or purging is going to happen.
Fill the filter housing.then the high pressure side of the fuel pump is gravity fed and only has to move fuel 8-10" to the heads and tada magic is made.
My original response was not meant smart Alec. I was in a hurry from other factors at home and just hate to see people waste time and money.
For the most part we ARE all friends here. Have a great Sunday!
If the pump can't get air/fuel past the check valves in the pump and overcome the regulator then no bleeding or purging is going to happen.
Fill the filter housing.then the high pressure side of the fuel pump is gravity fed and only has to move fuel 8-10" to the heads and tada magic is made.
My original response was not meant smart Alec. I was in a hurry from other factors at home and just hate to see people waste time and money.
For the most part we ARE all friends here. Have a great Sunday!
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Ok ok simmer down people. IMO the electric pump may help to prime the mechanical pump. But the design of these pumps allows them to prime themselves easy enough. But here's the kicker on your $25 pump, if the pump does not pump enough fuel to keep up to the mechanical one it will cause restriction wearing the mechanical one out prematurely, also, if the electric pump dies It may cause enough restriction to keep the truck from running properly. IMO the cons out weigh the pros. But that's just my opinion. Take it or leave it, makes no difference to me.
Senior User
Joined: May 2013
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I put an auxiliary low pressure fuel pump in line because I wanted to add two water/sediment fuel filters to my system. I knew the two extra fuel filters would put an additional load on the engine fuel pump trying to suction fuel through them. The auxiliary pump pushes the fuel through the two added filters at about 4 psi. Should this Kennedy pump ever fail, it is deigned to provide no additional restriction to drawing fuel through it. So, with my setup, I have super-filtered fuel to the engine without overtaxing the engine fuel pump. I also have fuel pressure gauges to let me know what's going on. It cost a few bucks, but I don't want to get caught on the road with fuel contamination problems.
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