once again have you checked the suction side of the pump for a restriction?
also exactly how many volts do you have at the pump when you cycle the key to the on position?

 

Yea I checked the suction side and it's free and clear. Not sure about volts yet I need to get a volt meter and I won't have the truck back till Thursday

 

ok so what was the "hg when you tested the suction side?

 

sorry cheez im slow what is the HG?

 

It is measurement of vacuum. How much suction (vacuum) had to be applied to draw fuel?

 

thank you.

 

sorry about that. i didnt test the vaccum just checked the line and the fitting on the pump. i have no way of testing the vaccum.

 

is there a cheap way to measure this?

 

yup.... "T" a vacuum gauge in between the pump and the tank. I would suggest doing it at the pump. looking for no more then 6"hg

 

ok i will see what i can do. if its more or less then what does that mean?

 

If the vacuum is more than 6 inches of mercury, then you have a suction restriction.

 

ok which would mean that something in the tank is restricting the flow. so say its under the 6" mark. then is it the pump or something else?

 

Yes .

 

alrighty sounds good ill try to get something done on it before the weekend and report back with my findings. airdog says its not there pump but im starting to doubt what they are saying. they wont send me a new one but im afraid im going to have to spend alot more money on new things that doesnt fix the problem before they send me a new one

 

hey guys havent had a chance to get to test these things that yall have suggested but here is a thread that describes exactly what im talking about on the org and seems that 2 or 3 other people are having this problem. let me know what yall think. im tempted to just try and get my money back on the thing. 2nd Airdog II DF 165 won't maintain FP - Ford Powerstroke Diesel Forum