Ford Repair Questions? Ask a Mechanic for Answers ASAP
Fuel pressure over 130 psi? Are you sure about that? What engine is this?
You never answered my question about "Fuel pressure over 130 psi? Are you sure about that?"
JA isn't a scam, stop reading what people put on the internet who want you to think that.
130 psi is way too high
It's only supposed to be 28-45 psi with the engine running and 35-45 psi with key on engine off.
is the engine still running lean with all that fuel pressure?
fuel pressure was fine before.
Where did you get this pump, what are the psi specs on it or what is the brand name and model number or a link to where you got it?
I cannot answer that until you answer me. If nothing has changed it must be the pump.
What did you mean by "bowed fuel lines"?
if you bent a fuel line that could cause it.
is this the flex fuel 5.4 or no?
Autozone lists 4 delphi fuel pumps. which one? http://www.autozone.com/external-engine/fuel-pump/ford/f150-1-2-ton-p-u-2wd/2008/8-cylinders-v-5-4l-flex-fuel?filters=4294954350
they are the flex
Ok, blowed out. I get it.
perhaps you blew something down the line inside the fuel line and it got stuck and is now clogging up the fuel line causing both too high of a fuel pressure and not enough fuel flow coming through causing the lean fuel condition.
wait 1 minute, autozone is saying DFG0851 doesn't fit.
Read what their website says, http://www.autozone.com/external-engine/fuel-pump/delphi-fuel-pump/556127_0_0/?checkfit=true
Do you know your wheelbase?
No wait a minute, I switched over to non flex assuming this was not flex because you never mentioned it before. Let me double-check.
Yeah, ok this fits. Sorry.
Now, back to the possible clogged fuel line. I would unhook both ends and see if you can blow air through the line only using a little pressure for now, like about 20 psi or so and go to the other end and make sure it is coming out.
I believe I was just reading yesterday how flex fuel vehicle fuel lines are lined with something because of the E85. Did you change any fuel lines or anything else, besides the fuel pump, as far as the fuel delivery goes?
Where exactly are you testing the fuel pressure at?
That vin is invalid and why are you giving it to me?
Is there any way you can check it closer to the pump?
What fuel are you using?
Is this new fuel filter a 3 port fuel filter?
First of all the vin I believe ends with 6 numbers, you have an d in there.
So that's gasoline, correct?
Ok, is that what the old fuel filter had?
Well, that does it for me, I don't know what else to think but that is too much fuel pressure. I think I'll opt out, I don't know what else it could be causing that high fuel pressure and until that is below that 45 psi, I don't think moving onto anything else is ok for now.