I've been thinking of something lately. It is probably completely false but who knows.

What do you guys think about ford changing the calibration so the tank cannot get run low because of the hpfp failures they saw in the 11-16 models.

Many people claimed that when they failed they had no water in the fuel at all. Maybe the tank was run low and the pump sucked just a fraction of air which caused it to grenade?

 

the 48 gallon long bed tanks are pretty darned accurate with the DTE

 

I don't think the pump sucking air is going to cause it to immediately fail. Trucks do run out of fuel. Sometimes the fuel in the lines freezes and can't flow.

Pump failures were less common (unheard of?) starting in 2015. The pump pistons were coated with a special anti-friction material which helped provide lube when diesel did not.

 

Well the easiest way to confirm is toss a 5 gallon fuel jug in the bed and drive the truck till it stops running. Use a little of the diesel from the jug to get you to a fuel station and fill up.

 

Still no fix from Ford on this?

 

Every time the fuel filters are changed the HPFP has to be cycled several times until it bleeds air out of the system. Instructions say to cycle the key 6 times. You can hear lots-o-air being pushed through the lines until there is none. I seriously doubt that running out of fuel is any worse than purging air after a fuel filter change.

Edit: Ignore this. HPFP only turns when engine is on. Read Troverman's next comment below.

 

Whoa, whoa, you are not cycling the HPFP...just the electric lift pump in the DFCM or tank, I believe, as of 2017. The HPFP is only operational when the engine is running.

 

You are absolutely right. I officially regret my previous comment.

 

I did the same thing with the same outcome. I drove it until 0 miles until empty, then 10 miles further. The tank took 29 gallons (compared to the 34 gallons of stated capacity).

 

HoosierTom: i see you have a f250, what is the axle ratio, bed & cab?
thanx in advance

 

Its all good. Had me worried for a second I was supposed to be cranking the engine during bleeding, lol.

 

Hah!! That is a good one...



biz

 

Does anyone know if Ford is even thinking about this issue? Had my first tank down to 50mi. to go,fill up took 25 gal.

 

I very seriously doubt it. To them it's probably a non-issue.

My last truck had a 34 gal tank as well, and the most I ever put in it was a hair over 31 gal, and that's with going well beyond the 0 miles DTE as I was out in the boonies and had to nurse along until I found a station. So, I don't really think the experiences here with the new 2017 is that far out of the ordinary. YMMV.

 

I find this totally unacceptable on an $80,000 vehicle. The tank on the short bed is already too small, then to get short sheeted by Ford without a fix isn't funny at all.
Come on...Wakie Wakie FORD!