I've been having problems with my 99 Ford F250 2 wheel drive Powerstroke I changed injectors I've had two people hook it up to a computer it runs and idles fine until it hits about two grand under a load I've checked everything I've changed exhaust back pressure sensor can anyone help someone told me it might be the screens in their tank would that be true Professor messing with it

 

Absolutely that could be the problem, it is very common on these trucks and it wouldn't be the first time someone changed a perfectly good set of injectors when the issue was clogged pickup screens. The solution is to get rid of those troublesome screens and do the Hutch Mod.
Welcome to guzzle's In-tank Hutch Mod Web Page

 

My first inclination would be to suspect weak fuel pressure (pump, pressure regulator) or some clogging in the system (filter, tank screens) based on the symptoms you tell us.

The filter should be changed every other oil change or around 10,000 miles. The pumps do wear out. If yours is the 20 year old original one, I would just recommend you put a new one on anyway. You can get the naked OEM one for $100 if you shop around online (Bosch).

As for the tank screens, that is kind of a PITA to drop the tank. Have a look at this video and watch how this guy troubleshoots clogged tank filters:


That would be the last thing I would do if changing the filter, pump, and rebuilding the FPR (spring wears out) didn't fix the problem. Those are all relatively cheap and easy fixes.

 

Welcome.
it could very well be a fuel starvation issue.
With the age of our trucks, pretty much all of them need or already have a hutch mod.
You can check fuel pressure. Use a long hose on your gauge so you can tuck it under the windshield wiper and watch it while you drive. It should not fall below 45psi under load.

 

Mine had 426k miles on it when I bought it, still had the original set-up and still working fine. I dropped the tank because of a broken pick-up foot and considered the Hutch mod, but instead I just cleaned the screens and put them back in.

 

I'll do the fuel pressure test today and I will let you guys know thank you

 

Those in tank and pre-pump mods are one of the best I have done. Really helped with injector noise on original injectors. I am sure mine was leaking air
into the lines.

 

I've did the fuel test and my truck is carrying 100psi on fuel pressure is that too much pressure. The truck blows blue/white smoke when it hits about 2200rpm and looses power any other ideas from anyone

 

Have you checked all the simple things like the primary fuel filter on the engine. I would look into possibly the injector driver module, and re-check the ICP and IPR. It sounds like the injectors are not keeping up with the engine demand. Are there any oil leaks on or around the HPOP?

 

That's kinda high....there might be a restriction somewhere in or after the fuel bowl. Normal FP is 55-65. Maybe the FP regulator itself on the side of the fuel bowl.

 

100psi is too high. Where are you measuring from?
There is a port on the lower right rear area of the fuel bowl. It's a -4 ORB (o-rings boss) plug. That is where you want to check. Should be between 45-70psi with 70 as max. 60-65 is ideal.

 

I measured from the top port in fuel bowl as soon as I turned the key on it went up to 100 psi. Would that be the cause of my problem. Does anyone know why it wouldnt be shutting off at 65-75. It seams like a lot of pressure for the fuel alone ..ive tried about everything. Ive changed the driver control module with a used one. Whats the chances they both do the same thing

 

When I rebuilt my fuel bowl, I did not install the hard line into the FPR properly. The line was in straight and sealed, but was out about 1/4 of the full travel of the union.

This produced a 100+ psi reading on my gauge. Luckily this was the first place I checked and fully inserted the line and the pressure went back down to 65 psi.

This is just to show you that one little thing can throw the fuel pressure out of whack.

 

By "top port" are you talking about the one the return line is connected to?

 

from the top pressure port