30 psi? fuel pump?
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Freshman User
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30 psi? fuel pump?
i checked my fuel pressure today and it was only at 27-30 psi at idle. i then took it for a test drive while looking at the gauge. at WOT i was getting maybe 10 psi. So my first thought was the tank filters might be gunked up. I went further and disconnected the line from the tank to the fuel pump. And ran a fuel line from the pump to a 5 gal can. started the truck and the same result happened. Is there any way i can make for sure its the fuel pump? or is there something else on the fuel bowl that i should check first. thanks yall!
e99 f250, 4in, 6637, gauges.
e99 f250, 4in, 6637, gauges.
Posting Guru
Joined: Oct 2008
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i checked my fuel pressure today and it was only at 27-30 psi at idle. i then took it for a test drive while looking at the gauge. at WOT i was getting maybe 10 psi. So my first thought was the tank filters might be gunked up. I went further and disconnected the line from the tank to the fuel pump. And ran a fuel line from the pump to a 5 gal can. started the truck and the same result happened. Is there any way i can make for sure its the fuel pump? or is there something else on the fuel bowl that i should check first. thanks yall!
e99 f250, 4in, 6637, gauges.
e99 f250, 4in, 6637, gauges.
Senior User
Joined: Nov 2006
Posts: 222
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From: Sayreville, NJ
when my e99 acted like this it was the fuel pressure regulator bad. I repaired with this kit Rebuild Kit for the 1999-2003 Fuel Bowl Pressure Relief Valve
Here is the billet style upgrade http://www.dieselorings.com/1999-200...m-springs.html
Here is the billet style upgrade http://www.dieselorings.com/1999-200...m-springs.html
Hotshot
Joined: Jan 2011
Posts: 18,849
Likes: 179
From: Puget Sound
Open pressure side, blow air back, and look for chunks. Hook the pressure side back up, use your bucket to supply the pump, open the fuel bowl drain into a container, and measure the flow. This will completely bypass any clogging or regulator questions.
When was your last fuel filter change? Any fuel mods?
When was your last fuel filter change? Any fuel mods?
Thread Starter
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Freshman User
Joined: Feb 2015
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Open pressure side, blow air back, and look for chunks. Hook the pressure side back up, use your bucket to supply the pump, open the fuel bowl drain into a container, and measure the flow. This will completely bypass any clogging or regulator questions.
When was your last fuel filter change? Any fuel mods?
When was your last fuel filter change? Any fuel mods?
I changed the filter last month. And no fuel mods
Hotshot
Joined: Nov 2006
Posts: 11,288
Likes: 269
From: North of Greenville
When the plastic pickup foot in the tank starts crumbling and falling apart, or if you get trash-contaminated fuel, it can create pluggage in the top bend of the suction tubing right on top of the tank, and the fuel flow can go to "almost no flow" conditions quite easily.
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DJdemon6696
1987 - 1996 F150 & Larger F-Series Trucks
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Dec 2, 2007 04:43 PM
