Ford's answers to the NHTSA 6.7 Investigation

NewsW wrote:

NinerBikes wrote:


There have been quite a few occurrences that I've read about on TDI club from folks that had the car running fine, 1/2 tank of fuel left, from a long drive, shut down, ( hot, cold cycle) start up the next morning, make it a half a mile down the suburban 25 mph street, and boom, the motor goes dead as a door nail, never to start again.

Pose this question:

Is there cases that the failure happened immediately after filling up with a new tank of diesel? i.e. not much left in tank, and then, after fillup, formerly hot fuel in tank (from recirculation) now cold from ground.

Cold fuel then hits pump .... and bang?




There have been many cases where VW's went in for 20,000 mile services which include changing out the fuel filter for the fist time, and within a tank of fuel, the HPFP has failed... the procedure for bleeding all the air out of the new fuel filter requires VCDS software to cycle the fuel via soft ware 3 x for 2 minute intervals to saturate the fuel filter and get all the air out of it.


If you open up the system, let air into it, any particle that is "hung" by things like the microfilter can get dislodged (or back flushed via leakage from common rail pressure).

Or the very act of "filling" system with fuel.

Cyclic pressure pulse...





Coincidence that the HPFP fails so soon after a technician changes out a fuel filter? I think not.... there is also no water trap release on the bottom of teh fuel filter cannister on a TDI, you have to go in from the top with a syringe /turker baster, and suck the water off the bottom, out of the cannister with 10" of aquarium hose through a vent at the top to get the water which is heavier, out of the fuel filter cannister.

The last point speaks to their total ignorance of / disbelief in water contamination as an issue.

Why is there not a Water in fuel sensor?

Or is there?